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Mercury (planet), the Glossary

Index Mercury (planet)

Mercury is the first planet from the Sun and the smallest in the Solar System.[1]

Table of Contents

  1. 303 relations: Academy of Sciences of the Soviet Union, Accretion (astrophysics), Aerobraking, Al-Andalus, Al-Zarqali, Albedo, Albert Einstein, Allotropes of oxygen, Aluminium, Ancient Egypt, Ancient Greece, Ancient Rome, Angular diameter, Antarctica, Antipodes, Apollodorus (crater), Apparent magnitude, Apparent retrograde motion, Applied Physics Laboratory, Apsidal precession, Apsis, Arecibo Telescope, Argon, Assyria, Asteroid, Astronomical symbols, Astronomy in the medieval Islamic world, Astronomy on Mercury, Atmosphere, Avempace, Aviation Week & Space Technology, Axial tilt, Babylonia, Babylonian astronomy, Babylonian religion, Beethoven (crater), BepiColombo, Bond albedo, Budha, Caduceus, Calcium, Caloris Planitia, Carbon dioxide, Chaos theory, Chinese culture, Chondrite, Cold trap (astronomy), Comet Encke, Complex volcano, Conjunction (astronomy), ... Expand index (253 more) »

  2. Astronomical objects known since antiquity
  3. Planets of the Solar System
  4. Terrestrial planets

Academy of Sciences of the Soviet Union

The Academy of Sciences of the Soviet Union was the highest scientific institution of the Soviet Union from 1925 to 1991.

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Accretion (astrophysics)

In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, into an accretion disk.

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Aerobraking

Aerobraking is a spaceflight maneuver that reduces the high point of an elliptical orbit (apoapsis) by flying the vehicle through the atmosphere at the low point of the orbit (periapsis).

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Al-Andalus

Al-Andalus was the Muslim-ruled area of the Iberian Peninsula.

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Al-Zarqali

Abū Isḥāq Ibrāhīm ibn Yaḥyā al-Naqqāsh al-Zarqālī al-Tujibi (إبراهيمبن يحيى الزرقالي); also known as Al-Zarkali or Ibn Zarqala (1029–1100), was an Arab maker of astronomical instruments and an astrologer from the western part of the Islamic world.

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Albedo

Albedo is the fraction of sunlight that is diffusely reflected by a body.

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Albert Einstein

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who is widely held as one of the most influential scientists. Best known for developing the theory of relativity, Einstein also made important contributions to quantum mechanics. His mass–energy equivalence formula, which arises from relativity theory, has been called "the world's most famous equation".

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Allotropes of oxygen

There are several known allotropes of oxygen.

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Aluminium

Aluminium (Aluminum in North American English) is a chemical element; it has symbol Al and atomic number 13.

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Ancient Egypt

Ancient Egypt was a civilization of ancient Northeast Africa.

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Ancient Greece

Ancient Greece (Hellás) was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity, that comprised a loose collection of culturally and linguistically related city-states and other territories.

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Ancient Rome

In modern historiography, ancient Rome is the Roman civilisation from the founding of the Italian city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD.

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Angular diameter

The angular diameter, angular size, apparent diameter, or apparent size is an angular distance describing how large a sphere or circle appears from a given point of view.

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Antarctica

Antarctica is Earth's southernmost and least-populated continent.

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Antipodes

In geography, the antipode of any spot on Earth is the point on Earth's surface diametrically opposite to it.

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Apollodorus (crater)

Apollodorus is an impact crater on Mercury.

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Apparent magnitude

Apparent magnitude is a measure of the brightness of a star or other astronomical object.

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Apparent retrograde motion

Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point.

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Applied Physics Laboratory

The Johns Hopkins University Applied Physics Laboratory (or simply Applied Physics Laboratory, or APL) is a not-for-profit university-affiliated research center (UARC) in Howard County, Maryland.

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Apsidal precession

In celestial mechanics, apsidal precession (or apsidal advance) is the precession (gradual rotation) of the line connecting the apsides (line of apsides) of an astronomical body's orbit.

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Apsis

An apsis is the farthest or nearest point in the orbit of a planetary body about its primary body.

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Arecibo Telescope

The Arecibo Telescope was a spherical reflector radio telescope built into a natural sinkhole at the Arecibo Observatory located near Arecibo, Puerto Rico.

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Argon

Argon is a chemical element; it has symbol Ar and atomic number 18.

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Assyria

Assyria (Neo-Assyrian cuneiform: x16px, māt Aššur) was a major ancient Mesopotamian civilization which existed as a city-state from the 21st century BC to the 14th century BC, which eventually expanded into an empire from the 14th century BC to the 7th century BC.

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Asteroid

An asteroid is a minor planet—an object that is neither a true planet nor an identified comet— that orbits within the inner Solar System. Mercury (planet) and asteroid are solar System.

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Astronomical symbols

Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and observational events in European astronomy.

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Astronomy in the medieval Islamic world

Medieval Islamic astronomy comprises the astronomical developments made in the Islamic world, particularly during the Islamic Golden Age (9th–13th centuries), and mostly written in the Arabic language.

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Astronomy on Mercury

Astronomy on Mercury is the sky as viewed from the planet Mercury.

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Atmosphere

An atmosphere is a layer of gasses that envelop an astronomical object, held in place by the gravity of the object.

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Avempace

Abū Bakr Muḥammad ibn Yaḥyà ibn aṣ-Ṣā’igh at-Tūjībī ibn Bājja (أبو بكر محمد بن يحيى بن الصائغ التجيبي بن باجة), best known by his Latinised name Avempace (– 1138), was an Andalusi polymath, whose writings include works regarding astronomy, physics, and music, as well as philosophy, medicine, botany, and poetry.

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Aviation Week & Space Technology

Aviation Week & Space Technology, often abbreviated Aviation Week or AW&ST, is the flagship magazine of the Aviation Week Network, a division of Informa.

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Axial tilt

In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane; equivalently, it is the angle between its equatorial plane and orbital plane.

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Babylonia

Babylonia (𒆳𒆍𒀭𒊏𒆠) was an ancient Akkadian-speaking state and cultural area based in the city of Babylon in central-southern Mesopotamia (present-day Iraq and parts of Syria and Iran).

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Babylonian astronomy

Babylonian astronomy was the study or recording of celestial objects during the early history of Mesopotamia.

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Babylonian religion

Babylonian religion is the religious practice of Babylonia.

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Beethoven (crater)

Beethoven is a crater at latitude 20°S, longitude 124°W on Mercury.

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BepiColombo

BepiColombo is a joint mission of the European Space Agency (ESA) and the Japan Aerospace Exploration Agency (JAXA) to the planet Mercury.

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Bond albedo

The Bond albedo (also called spheric albedo, planetary albedo, and bolometric albedo), named after the American astronomer George Phillips Bond (1825–1865), who originally proposed it, is the fraction of power in the total electromagnetic radiation incident on an astronomical body that is scattered back out into space.

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Budha

Budha (बुध) is the Sanskrit word for the planet Mercury.

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Caduceus

The caduceus (☤;; cādūceus, from κηρύκειον kērū́keion "herald's wand, or staff") is the staff carried by Hermes in Greek mythology and consequently by Hermes Trismegistus in Greco-Egyptian mythology.

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Calcium

Calcium is a chemical element; it has symbol Ca and atomic number 20.

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Caloris Planitia

Caloris Planitia is a plain within a large impact basin on Mercury, informally named Caloris, about in diameter.

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Carbon dioxide

Carbon dioxide is a chemical compound with the chemical formula.

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Chaos theory

Chaos theory is an interdisciplinary area of scientific study and branch of mathematics.

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Chinese culture

Chinese culture is one of the world's oldest cultures, originating thousands of years ago.

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Chondrite

A chondrite is a stony (non-metallic) meteorite that has not been modified, by either melting or differentiation of the parent body.

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Cold trap (astronomy)

A cold trap is a concept in planetary sciences that describes an area cold enough to freeze (trap) volatiles.

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Comet Encke

Comet Encke, or Encke's Comet (official designation: 2P/Encke), is a periodic comet that completes an orbit of the Sun once every 3.3 years.

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Complex volcano

A complex volcano, also called a compound volcano or a volcanic complex, is a mixed landform consisting of related volcanic centers and their associated lava flows and pyroclastic rock.

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Conjunction (astronomy)

In astronomy, a conjunction occurs when two astronomical objects or spacecraft appear to be close to each other in the sky.

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Crescent

A crescent shape is a symbol or emblem used to represent the lunar phase (as it appears in the northern hemisphere) in the first quarter (the "sickle moon"), or by extension a symbol representing the Moon itself.

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Crust (geology)

In geology, the crust is the outermost solid shell of a planet, dwarf planet, or natural satellite.

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Culture of Japan

The culture of Japan has changed greatly over the millennia, from the country's prehistoric Jōmon period, to its contemporary modern culture, which absorbs influences from Asia and other regions of the world.

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Culture of Korea

The traditional culture of Korea is the shared cultural and historical heritage of Korea before the division of Korea in 1945.

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Culture of Vietnam

The culture of Vietnam (Văn hoá Việt Nam, 文化越南) are the customs and traditions of the Kinh people and the other ethnic groups of Vietnam.

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Cuneiform

Cuneiform is a logo-syllabic writing system that was used to write several languages of the Ancient Near East.

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David Rothery

David A. Rothery is professor of planetary geosciences at the Open University, where he chairs a level 2 module Planetary Science and the Search for Life and a level 1 module Volcanoes, Earthquakes and Tsunamis.

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Deferent and epicycle

In the Hipparchian, Ptolemaic, and Copernican systems of astronomy, the epicycle (meaning "circle moving on another circle") was a geometric model used to explain the variations in speed and direction of the apparent motion of the Moon, Sun, and planets.

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Deimos (moon)

Deimos (systematic designation: Mars II) is the smaller and outer of the two natural satellites of Mars, the other being Phobos. Mercury (planet) and Deimos (moon) are solar System.

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Delta-v

Delta-v (more known as "change in velocity"), symbolized as and pronounced deltah-vee, as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver.

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Delta-v budget

In astrodynamics and aerospace, a delta-v budget is an estimate of the total change in velocity (delta-''v'') required for a space mission.

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Diffusion

Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration.

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Dipole

In physics, a dipole is an electromagnetic phenomenon which occurs in two ways.

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Drag (physics)

In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the relative motion of any object, moving with respect to a surrounding fluid.

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Dynamo

284110) A dynamo is an electrical generator that creates direct current using a commutator.

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Dynamo theory

In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.

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E. M. Antoniadi

Eugène Michel Antoniadi (Greek: Ευγένιος Αντωνιάδης; 1 March 1870 – 10 February 1944) was a Greek-French astronomer.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life. Mercury (planet) and Earth are astronomical objects known since antiquity, planets of the Solar System, solar System and terrestrial planets.

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Earth's magnetic field

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.

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Eastern Time Zone

The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, and the state of Quintana Roo in Mexico.

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Ecliptic

The ecliptic or ecliptic plane is the orbital plane of Earth around the Sun.

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Effective temperature

The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.

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Egyptian Greeks

The Egyptian Greeks, also known as Egyptiotes (Eyiptiótes) or simply Greeks in Egypt (Éllines tis Eyíptou), are the ethnic Greek community from Egypt that has existed from the Hellenistic period until the aftermath of the Egyptian coup d'état of 1952, when most were forced to leave.

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Ejecta

Ejecta (singular ejectum) are particles ejected from an area.

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Elongation (astronomy)

In astronomy, a planet's elongation is the angular separation between the Sun and the planet, with Earth as the reference point.

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Enstatite

Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) – ferrosilite (FeSiO3).

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Epoch (astronomy)

In astronomy, an epoch or reference epoch is a moment in time used as a reference point for some time-varying astronomical quantity.

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Equator

The equator is a circle of latitude that divides a spheroid, such as Earth, into the Northern and Southern hemispheres.

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Escape velocity

In celestial mechanics, escape velocity or escape speed is the minimum speed needed for an object to escape from contact with or orbit of a primary body, assuming.

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Escarpment

An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations.

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European Space Agency

The European Space Agency (ESA) is a 22-member intergovernmental body devoted to space exploration.

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Exosphere

The exosphere (ἔξω éxō "outside, external, beyond", σφαῖρα sphaĩra "sphere") is a thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are gravitationally bound to that body, but where the density is so low that the molecules are essentially collision-less.

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Exploration of Mars

The planet Mars has been explored remotely by spacecraft. Mercury (planet) and Exploration of Mars are solar System.

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Flux transfer event

A flux transfer event (FTE) occurs when a magnetic portal opens in the Earth's magnetosphere through which high-energy particles flow from the Sun.

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Formation and evolution of the Solar System

There is evidence that the formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Mercury (planet) and formation and evolution of the Solar System are solar System.

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Forsterite

Forsterite (Mg2SiO4; commonly abbreviated as Fo; also known as white olivine) is the magnesium-rich end-member of the olivine solid solution series.

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Fossa (planetary nomenclature)

In planetary nomenclature, a fossa (pl. fossae) is a long, narrow depression (trough) on the surface of an extraterrestrial body, such as a planet or moon.

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Friedrich Wilhelm Bessel

Friedrich Wilhelm Bessel (22 July 1784 – 17 March 1846) was a German astronomer, mathematician, physicist, and geodesist.

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Galileo Galilei

Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei or simply Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a polymath.

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Gamma ray

A gamma ray, also known as gamma radiation (symbol), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei.

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Ganymede (moon)

Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter and in the Solar System.

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General relativity

General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.

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Geocentric orbit

A geocentric orbit, Earth-centered orbit, or Earth orbit involves any object orbiting Earth, such as the Moon or artificial satellites.

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Geology of solar terrestrial planets

The geology of solar terrestrial planets mainly deals with the geological aspects of the four terrestrial planets of the Solar System – Mercury, Venus, Earth, and Mars – and one terrestrial dwarf planet: Ceres. Mercury (planet) and geology of solar terrestrial planets are solar System.

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Geometric albedo

In astronomy, the geometric albedo of a celestial body is the ratio of its actual brightness as seen from the light source (i.e. at zero phase angle) to that of an idealized flat, fully reflecting, diffusively scattering (Lambertian) disk with the same cross-section.

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Germanic paganism

Germanic paganism or Germanic religion refers to the traditional, culturally significant religion of the Germanic peoples.

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Giant-impact hypothesis

The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly.

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Giovanni Battista Zupi

Giovanni Battista Zupi or Zupus (2 November 1589 – 26 August 1667) was an Italian astronomer, mathematician, and Jesuit priest.

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Giovanni Schiaparelli

Giovanni Virginio Schiaparelli (14 March 1835 – 4 July 1910) was an Italian astronomer and science historian.

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Giuseppe Colombo

Giuseppe "Bepi" Colombo (2 October 1920 in Padua – 20 February 1984 in Padua) was an Italian scientist, mathematician and engineer at the University of Padua, Italy.

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Goldstone Solar System Radar

The Goldstone Solar System Radar (GSSR) is a large radar system used for investigating objects in the Solar System.

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Gordon Pettengill

Gordon Hemenway Pettengill (February 10, 1926 – May 8, 2021) was an American radio astronomer and planetary physicist.

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Gravitational compression

In astrophysics, gravitational compression is a phenomenon in which gravity, acting on the mass of an object, compresses it, reducing its size and increasing the object's density.

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Gravity

In physics, gravity is a fundamental interaction which causes mutual attraction between all things that have mass.

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Gravity assist

A gravity assist, gravity assist maneuver, swing-by, or generally a gravitational slingshot in orbital mechanics, is a type of spaceflight flyby which makes use of the relative movement (e.g. orbit around the Sun) and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typically to save propellant and reduce expense.

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Greek language

Greek (Elliniká,; Hellēnikḗ) is an independent branch of the Indo-European family of languages, native to Greece, Cyprus, Italy (in Calabria and Salento), southern Albania, and other regions of the Balkans, the Black Sea coast, Asia Minor, and the Eastern Mediterranean.

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Helium

Helium (from lit) is a chemical element; it has symbol He and atomic number 2.

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Helium atom

A helium atom is an atom of the chemical element helium.

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Hermes

Hermes (Ἑρμῆς) is an Olympian deity in ancient Greek religion and mythology considered the herald of the gods.

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Highland

Highlands or uplands are areas of high elevation such as a mountainous region, elevated mountainous plateau or high hills.

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Hindu mythology

Hindu mythology is the body of myths attributed to, and espoused by, the adherents of the Hindu religion, found in Hindu texts such as the Vedas, the itihasa (the epics of the Mahabharata and Ramayana) the Puranas, and mythological stories specific to a particular ethnolinguistic group like the Tamil Periya Puranam and ''Divya Prabandham'', and the Mangal Kavya of Bengal.

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History of China

The history of China spans several millennia across a wide geographical area.

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Homogeneity and heterogeneity

Homogeneity and heterogeneity are concepts relating to the uniformity of a substance, process or image.

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Houghton Mifflin Harcourt

Houghton Mifflin Harcourt (HMH) is an American publisher of textbooks, instructional technology materials, assessments, and reference works.

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Hubble Space Telescope

The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.

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Hun Kal (crater)

Hun Kal is a small (about 1.5 km in diameter) crater on Mercury that serves as the reference point for the planet's system of longitude.

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Hydrogen

Hydrogen is a chemical element; it has symbol H and atomic number 1.

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Hydrogen atom

A hydrogen atom is an atom of the chemical element hydrogen.

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Hydronium

In chemistry, hydronium (hydroxonium in traditional British English) is the cation, also written as, the type of oxonium ion produced by protonation of water.

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Hydroxide

Hydroxide is a diatomic anion with chemical formula OH−.

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Icarus (journal)

ICARUS is a scientific journal dedicated to the field of planetary science.

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Ice

Ice is water that is frozen into a solid state, typically forming at or below temperatures of 0 °C, 32 °F, or 273.15 K. It occurs naturally on Earth, on other planets, in Oort cloud objects, and as interstellar ice.

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Impact crater

An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object.

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Impact event

An impact event is a collision between astronomical objects causing measurable effects.

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Infrared

Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves.

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Institute of Radio-engineering and Electronics

Institute of Radio-engineering and Electronics (Институт радиотехники и электроники (ИРЭ)) by the Russian Academy of Science is an institute in Moscow, that conducts fundamental research in fields of radiophysics, radiotechnics, physical and quantum electronics, informatics.

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Inter-crater plains on Mercury

Inter-crater plains on Mercury are a land-form consisting of plains between craters on Mercury.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation.

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International Celestial Reference System and its realizations

The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU).

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Invariable plane

The invariable plane of a planetary system, also called Laplace's invariable plane, is the plane passing through its barycenter (center of mass) perpendicular to its angular momentum vector.

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Iron

Iron is a chemical element.

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Isostasy

Isostasy (Greek ''ísos'' 'equal', ''stásis'' 'standstill') or isostatic equilibrium is the state of gravitational equilibrium between Earth's crust (or lithosphere) and mantle such that the crust "floats" at an elevation that depends on its thickness and density.

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JAXA

The is the Japanese national air and space agency.

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Johann Hieronymus Schröter

Johann Hieronymus Schröter (30 August 1745, Erfurt – 29 August 1816, Lilienthal) was a German astronomer.

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Johannes Kepler

Johannes Kepler (27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music.

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John Bevis

John Bevis (10 November 1695 in Salisbury, Wiltshire – 6 November 1771) was an English doctor, electrical researcher and astronomer.

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JPL Horizons On-Line Ephemeris System

JPL Horizons On-Line Ephemeris System provides access to key Solar System data and flexible production of highly accurate ephemerides for Solar System objects.

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Julian year (astronomy)

In astronomy, a Julian year (symbol: a or aj) is a unit of measurement of time defined as exactly 365.25 days of SI seconds each.

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Jupiter

Jupiter is the fifth planet from the Sun and the largest in the Solar System. Mercury (planet) and Jupiter are astronomical objects known since antiquity, planets of the Solar System and solar System.

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Kerala school of astronomy and mathematics

The Kerala school of astronomy and mathematics or the Kerala school was a school of mathematics and astronomy founded by Madhava of Sangamagrama in Tirur, Malappuram, Kerala, India, which included among its members: Parameshvara, Neelakanta Somayaji, Jyeshtadeva, Achyuta Pisharati, Melpathur Narayana Bhattathiri and Achyuta Panikkar.

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Kinetic energy

In physics, the kinetic energy of an object is the form of energy that it possesses due to its motion.

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Krypton

Krypton (from translit 'the hidden one') is a chemical element; it has symbol Kr and atomic number 36.

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Late Heavy Bombardment

The Late Heavy Bombardment (LHB), or lunar cataclysm, is a hypothesized astronomical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, at a time corresponding to the Neohadean and Eoarchean eras on Earth.

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Lava

Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface.

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Lexico

Lexico was a dictionary website that provided a collection of English and Spanish dictionaries produced by Oxford University Press (OUP), the publishing house of the University of Oxford.

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List of albedo features on Mercury

This is a list of the albedo features of the planet Mercury as seen by early telescopic observation.

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List of craters on Mercury

This is a list of named craters on Mercury, the innermost planet of the Solar System (for other features, see list of geological features on Mercury).

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List of Solar System objects by size

This article includes a list of the most massive known objects of the Solar System and partial lists of smaller objects by observed mean radius. Mercury (planet) and list of Solar System objects by size are solar System.

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Longitude

Longitude is a geographic coordinate that specifies the east–west position of a point on the surface of the Earth, or another celestial body.

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Lucky imaging

Lucky imaging (also called lucky exposures) is one form of speckle imaging used for astrophotography.

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Lunar mare

The lunar maria (mare) are large, dark, basaltic plains on Earth's Moon, formed by lava flowing into ancient impact basins.

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Lunar phase

A lunar phase or Moon phase is the apparent shape of the Moon's directly sunlit portion as viewed from the Earth (because the Moon is tidally locked with the Earth, the same hemisphere is always facing the Earth).

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Magma

Magma is the molten or semi-molten natural material from which all igneous rocks are formed.

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Magma ocean

Magma oceans are vast fields of surface magma that exist during periods of a planet's or some natural satellite's accretion when the celestial body is completely or partly molten.

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Magnesium

Magnesium is a chemical element; it has symbol Mg and atomic number 12.

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Magnetic field

A magnetic field (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

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Magnetic reconnection

Magnetic reconnection is a physical process occurring in electrically conducting plasmas, in which the magnetic topology is rearranged and magnetic energy is converted to kinetic energy, thermal energy, and particle acceleration.

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Magnetometer

A magnetometer is a device that measures magnetic field or magnetic dipole moment.

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Magnetosphere

In astronomy and planetary science, a magnetosphere is a region of space surrounding an astronomical object in which charged particles are affected by that object's magnetic field.

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Mantle (geology)

A mantle is a layer inside a planetary body bounded below by a core and above by a crust.

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Maragheh observatory

The Maragheh observatory (Persian: رصدخانه مراغه), also spelled Maragha, Maragah, Marageh, and Maraga, was an astronomical observatory established in the mid 13th century under the patronage of the Ilkhanid Hulagu and the directorship of Nasir al-Din al-Tusi, a Persian scientist and astronomer.

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Mars

Mars is the fourth planet from the Sun. Mercury (planet) and Mars are astronomical objects known since antiquity, planets of the Solar System, solar System and terrestrial planets.

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Maya civilization

The Maya civilization was a Mesoamerican civilization that existed from antiquity to the early modern period.

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Mercury (mythology)

Mercury (Mercurius) is a major god in Roman religion and mythology, being one of the 12 Dii Consentes within the ancient Roman pantheon.

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Mercury in fiction

Fictional depictions of Mercury, the innermost planet of the Solar System, have gone through three distinct phases.

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Mercury's magnetic field

Mercury's magnetic field is approximately a magnetic dipole (meaning the field has only two magnetic poles) apparently global, on planet Mercury.

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Meridian (astronomy)

In astronomy, the meridian is the great circle passing through the celestial poles, as well as the zenith and nadir of an observer's location.

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MESSENGER

MESSENGER was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury's chemical composition, geology, and magnetic field.

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Micrometeorite

A micrometeorite is a micrometeoroid that has survived entry through the Earth's atmosphere. Mercury (planet) and micrometeorite are solar System.

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Microorganism

A microorganism, or microbe, is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India. The scientific study of microorganisms began with their observation under the microscope in the 1670s by Anton van Leeuwenhoek.

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Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol, is a unit of angular measurement equal to of one degree.

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Moment of inertia factor

In planetary sciences, the moment of inertia factor or normalized polar moment of inertia is a dimensionless quantity that characterizes the radial distribution of mass inside a planet or satellite.

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Moon

The Moon is Earth's only natural satellite. Mercury (planet) and Moon are astronomical objects known since antiquity and solar System.

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Mount Wilson Observatory

The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States.

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MUL.APIN

MUL.APIN is the conventional title given to a Babylonian compendium that deals with many diverse aspects of Babylonian astronomy and astrology.

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Multi-ringed basin

A multi-ringed basin (also a multi-ring impact basin) is not a simple bowl-shaped crater, or a peak ring crater, but one containing multiple concentric topographic rings; a multi-ringed basin could be described as a massive impact crater, surrounded by circular chains of mountains resembling rings on a bull's-eye.

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Nabu

Nabu (cuneiform: 𒀭𒀝 Nabû, Nəḇo) is the Babylonian patron god of literacy, the rational arts, scribes, and wisdom.

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NASA

The National Aeronautics and Space Administration (NASA) is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research.

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Natural satellite

A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Mercury (planet) and natural satellite are solar System.

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Nature (journal)

Nature is a British weekly scientific journal founded and based in London, England.

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Neon

Neon is a chemical element; it has symbol Ne and atomic number 10.

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Neptune

Neptune is the eighth and farthest known planet from the Sun. Mercury (planet) and Neptune are planets of the Solar System and solar System.

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Newton's laws of motion

Newton's laws of motion are three physical laws that describe the relationship between the motion of an object and the forces acting on it.

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Nilakantha Somayaji

Keļallur Nīlakaṇṭha Somayāji (14 June 1444 – 1544), also referred to as Keļallur Comatiri, was a major mathematician and astronomer of the Kerala school of astronomy and mathematics.

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Nitrogen

Nitrogen is a chemical element; it has symbol N and atomic number 7.

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Northern Hemisphere

The Northern Hemisphere is the half of Earth that is north of the Equator.

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Occultation

An occultation is an event that occurs when one object is hidden from the observer by another object that passes between them.

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Odin

Odin (from Óðinn) is a widely revered god in Germanic paganism.

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Olivine

The mineral olivine is a magnesium iron silicate with the chemical formula.

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Opposition surge

The opposition surge (sometimes known as the opposition effect, opposition spike or Seeliger effect) is the brightening of a rough surface, or an object with many particles, when illuminated from directly behind the observer.

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Orbital eccentricity

In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around another body deviates from a perfect circle.

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Orbital resonance

In celestial mechanics, orbital resonance occurs when orbiting bodies exert regular, periodic gravitational influence on each other, usually because their orbital periods are related by a ratio of small integers.

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Orbital speed

In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter (the combined center of mass) or, if one body is much more massive than the other bodies of the system combined, its speed relative to the center of mass of the most massive body.

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Osculating orbit

In astronomy, and in particular in astrodynamics, the osculating orbit of an object in space at a given moment in time is the gravitational Kepler orbit (i.e. an elliptic or other conic one) that it would have around its central body if perturbations were absent.

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Outgassing

Outgassing (sometimes called offgassing, particularly when in reference to indoor air quality) is the release of a gas that was dissolved, trapped, frozen, or absorbed in some material.

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Outline of life forms

The following outline is provided as an overview of and topical guide to life forms: A life form (also spelled life-form or lifeform) is an entity that is living, such as plants (flora), animals (fauna), and fungi (funga).

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Outline of Mercury (planet)

The following outline is provided as an overview of and topical guide to Mercury: Mercury – smallest and innermost planet in the Solar System.

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Oxford University Press

Oxford University Press (OUP) is the publishing house of the University of Oxford.

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Oxygen

Oxygen is a chemical element; it has symbol O and atomic number 8.

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Oxyrhynchus Papyri

The Oxyrhynchus Papyri are a group of manuscripts discovered during the late nineteenth and early twentieth centuries by papyrologists Bernard Pyne Grenfell and Arthur Surridge Hunt at an ancient rubbish dump near Oxyrhynchus in Egypt (modern el-Bahnasa).

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Permanently shadowed crater

A permanently shadowed crater is a depression on a body in the Solar System within which lies a point that is always in darkness.

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Perturbation (astronomy)

In astronomy, perturbation is the complex motion of a massive body subjected to forces other than the gravitational attraction of a single other massive body.

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Peterson Field Guides

The Peterson Field Guides (PFG) are a popular and influential series of American field guides intended to assist the layman in identification of birds, plants, insects and other natural phenomena.

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Phobos (moon)

Phobos (systematic designation) is the innermost and larger of the two natural satellites of Mars, the other being Deimos. Mercury (planet) and Phobos (moon) are solar System.

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Pierre Gassendi

Pierre Gassendi (also Pierre Gassend, Petrus Gassendi, Petrus Gassendus; 22 January 1592 – 24 October 1655) was a French philosopher, Catholic priest, astronomer, and mathematician.

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Pine nut

Pine nuts, also called piñón, pinoli, or pignoli, are the edible seeds of pines (family Pinaceae, genus Pinus).

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Plagioclase

Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group.

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Plain

In geography, a plain, commonly known as flatland, is a flat expanse of land that generally does not change much in elevation, and is primarily treeless.

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Planet

A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. Mercury (planet) and planet are solar System.

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Planetary core

A planetary core consists of the innermost layers of a planet.

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Planetary habitability

Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and maintain environments hospitable to life.

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Planetary nomenclature

Planetary nomenclature, like terrestrial nomenclature, is a system of uniquely identifying features on the surface of a planet or natural satellite so that the features can be easily located, described, and discussed. Mercury (planet) and Planetary nomenclature are planets of the Solar System.

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Planetesimal

Planetesimals are solid objects thought to exist in protoplanetary disks and debris disks.

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Planets in astrology

In astrology, planets have a meaning different from the astronomical understanding of what a planet is.

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Plasma (physics)

Plasma is one of four fundamental states of matter (the other three being solid, liquid, and gas) characterized by the presence of a significant portion of charged particles in any combination of ions or electrons.

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Potassium

Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number19.

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Potential energy

In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

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Potential well

A potential well is the region surrounding a local minimum of potential energy.

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Precession

Precession is a change in the orientation of the rotational axis of a rotating body.

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Proper motion

Proper motion is the astrometric measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.

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Protostar

A protostar is a very young star that is still gathering mass from its parent molecular cloud.

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Ptolemy

Claudius Ptolemy (Πτολεμαῖος,; Claudius Ptolemaeus; AD) was an Alexandrian mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science.

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Puerto Rico

-;.

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Pyroclastic flow

A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ground away from a volcano at average speeds of but is capable of reaching speeds up to.

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Pyroxene

The pyroxenes (commonly abbreviated Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks.

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Qutb al-Din al-Shirazi

Qotb al-Din Mahmoud b. Zia al-Din Mas'ud b. Mosleh Shirazi (قطب‌الدینْ محمود بن ضیاءالدینْ مسعود بن مصلح شیرازی; 1236–1311) was a 13th-century Persian polymath and poet who made contributions to astronomy, mathematics, medicine, physics, music theory, philosophy and Sufism.

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Radar

Radar is a system that uses radio waves to determine the distance (ranging), direction (azimuth and elevation angles), and radial velocity of objects relative to the site.

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Radioactive decay

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation.

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Radius

In classical geometry, a radius (radii or radiuses) of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.

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Ray system

In planetary geology, a ray system comprises radial streaks of fine ejecta thrown out during the formation of an impact crater, looking somewhat like many thin spokes coming from the hub of a wheel.

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Redox

Redox (reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the reactants change.

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Reflection (physics)

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.

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Regolith

Regolith is a blanket of unconsolidated, loose, heterogeneous superficial deposits covering solid rock.

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Rotation

Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation.

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Rotational frequency

Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of an object around an axis.

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Royal Astronomical Society of Canada

The Royal Astronomical Society of Canada (RASC) is a national, non-profit, charitable organization devoted to the advancement of astronomy and related sciences.

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Royal Observatory, Greenwich

The Royal Observatory, Greenwich (ROG; known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, temporarily moved south from Greenwich to Herstmonceux) is an observatory situated on a hill in Greenwich Park in south east London, overlooking the River Thames to the north.

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Rupes

Rupes (plural) is the Latin word for 'cliff'.

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Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

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Scientific modelling

Scientific modelling is an activity that produces models representing empirical objects, phenomena, and physical processes, to make a particular part or feature of the world easier to understand, define, quantify, visualize, or simulate.

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Scientific Reports

Scientific Reports is a peer-reviewed open-access scientific mega journal published by Nature Portfolio, covering all areas of the natural sciences.

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Secular resonance

A secular resonance is a type of orbital resonance between two bodies with synchronized precessional frequencies.

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Semi-major and semi-minor axes

In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the two most widely separated points of the perimeter.

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Shield volcano

A shield volcano is a type of volcano named for its low profile, resembling a shield lying on the ground.

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Sidereal time

Sidereal time ("sidereal" pronounced) is a system of timekeeping used especially by astronomers.

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Sidereal year

A sidereal year, also called a sidereal orbital period, is the time that Earth or another planetary body takes to orbit the Sun once with respect to the fixed stars.

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Silicate

A silicate is any member of a family of polyatomic anions consisting of silicon and oxygen, usually with the general formula, where.

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Silicon

Silicon is a chemical element; it has symbol Si and atomic number 14.

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Simon Marius

Simon Marius (latinized form of Simon Mayr; 10 January 1573 – 5 January 1625) was a German astronomer.

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Sirius

Sirius is the brightest star in the night sky. Mercury (planet) and Sirius are astronomical objects known since antiquity.

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Sodium

Sodium is a chemical element; it has symbol Na (from Neo-Latin natrium) and atomic number 11.

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Solar constant

The solar constant (GSC) measures the amount of energy received by a given area one astronomical unit away from the Sun.

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Solar eclipse

A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially.

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Solar maximum

Solar maximum is the regular period of greatest solar activity during the Sun's 11-year solar cycle.

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Solar sail

Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight on large surfaces.

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Solar System

The Solar SystemCapitalization of the name varies.

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Solar wind

The solar wind is a stream of charged particles released from the Sun's outermost atmospheric layer, the corona.

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Southern Hemisphere

The Southern Hemisphere is the half (hemisphere) of Earth that is south of the Equator.

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Space colonization

Space colonization is the use of outer space for colonization, such as permanent habitation, exploitation or territorial claims. Mercury (planet) and space colonization are solar System.

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Space Science Reviews

Space Science Reviews is a peer-reviewed, scientific journal of space science.

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Space weathering

Space weathering is the type of weathering that occurs to any object exposed to the harsh environment of outer space.

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Space.com

Space.com is an online publication focused on space exploration, astronomy, skywatching and entertainment, with editorial teams based in the United States and United Kingdom.

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Spectrometer

A spectrometer is a scientific instrument used to separate and measure spectral components of a physical phenomenon.

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Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.

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Sputtering

In physics, sputtering is a phenomenon in which microscopic particles of a solid material are ejected from its surface, after the material is itself bombarded by energetic particles of a plasma or gas.

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Sublimation (phase transition)

Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state.

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Subsolar point

The subsolar point on a planet is the point at which its Sun is perceived to be directly overhead (at the zenith); that is, where the Sun's rays strike the planet exactly perpendicular to its surface.

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Sun

The Sun is the star at the center of the Solar System. Mercury (planet) and Sun are astronomical objects known since antiquity and solar System.

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Sunlight

Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.

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Sunspot

Sunspots are temporary spots on the Sun's surface that are darker than the surrounding area.

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Synodic day

A synodic day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting, and is the basis of solar time.

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Telescope

A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation.

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Terrestrial planet

A terrestrial planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate, rocks or metals. Mercury (planet) and terrestrial planet are solar System and terrestrial planets.

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Tesla (unit)

The tesla (symbol: T) is the unit of magnetic flux density (also called magnetic B-field strength) in the International System of Units (SI).

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The New York Times

The New York Times (NYT) is an American daily newspaper based in New York City.

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Thomas Harriot

Thomas Harriot (– 2 July 1621), also spelled Harriott, Hariot or Heriot, was an English astronomer, mathematician, ethnographer and translator to whom the theory of refraction is attributed.

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Thrust fault

A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks.

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Tidal force

The tidal force or tide-generating force is a gravitational effect that stretches a body along the line towards and away from the center of mass of another body due to spatial variations in strength in gravitational field from the other body.

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Tidal heating

Tidal heating (also known as tidal working or tidal flexing) occurs through the tidal friction processes: orbital and rotational energy is dissipated as heat in either (or both) the surface ocean or interior of a planet or satellite.

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Tidal locking

Tidal locking between a pair of co-orbiting astronomical bodies occurs when one of the objects reaches a state where there is no longer any net change in its rotation rate over the course of a complete orbit.

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Titan (moon)

Titan is the largest moon of Saturn and the second-largest in the Solar System.

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Tolstoj (crater)

Tolstoj is a large, ancient impact crater on Mercury.

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Transit of Mercury

upright.

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Tycho Brahe

Tycho Brahe (born Tyge Ottesen Brahe,; 14 December 154624 October 1601), generally called Tycho for short, was a Danish astronomer of the Renaissance, known for his comprehensive and unprecedentedly accurate astronomical observations.

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Tychonic system

The Tychonic system (or Tychonian system) is a model of the universe published by Tycho Brahe in 1588, which combines what he saw as the mathematical benefits of the Copernican system with the philosophical and "physical" benefits of the Ptolemaic system.

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Ultraviolet

Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays.

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Underworld

The underworld, also known as the netherworld or hell, is the supernatural world of the dead in various religious traditions and myths, located below the world of the living.

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Uranus

Uranus is the seventh planet from the Sun. Mercury (planet) and Uranus are planets of the Solar System and solar System.

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Urbain Le Verrier

Urbain Jean Joseph Le Verrier (11 March 1811 – 23 September 1877) was a French astronomer and mathematician who specialized in celestial mechanics and is best known for predicting the existence and position of Neptune using only mathematics.

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Vallis (planetary geology)

Vallis or valles (plural valles) is the Latin word for valley.

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Velocity

Velocity is the speed in combination with the direction of motion of an object.

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Venus

Venus is the second planet from the Sun. Mercury (planet) and Venus are astronomical objects known since antiquity, planets of the Solar System, solar System and terrestrial planets.

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Very Large Array

The Karl G. Jansky Very Large Array (VLA) is a centimeter-wavelength radio astronomy observatory in the southwestern United States.

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Vladimir Kotelnikov

Vladimir Aleksandrovich Kotelnikov (Владимир Александрович Котельников; 6 September 1908 – 11 February 2005) was an information theory and radar astronomy pioneer from the Soviet Union.

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Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

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Vulcan (hypothetical planet)

Vulcan was a theorized planet that some pre-20th century astronomers thought existed in an orbit between Mercury and the Sun. Mercury (planet) and Vulcan (hypothetical planet) are solar System.

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Washington, D.C.

Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States.

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Water vapor

Water vapor, water vapour or aqueous vapor is the gaseous phase of water.

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Wrinkle ridge

A wrinkle ridge is a type of feature commonly found on lunar maria, or basalt plains.

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Wuxing (Chinese philosophy)

(五行|p.

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X-ray

X-rays (or rarely, X-radiation) are a form of high-energy electromagnetic radiation.

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Xenon

Xenon is a chemical element; it has symbol Xe and atomic number 54.

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1566 Icarus

1566 Icarus (provisional designation) is a large near-Earth object of the Apollo group and the lowest numbered potentially hazardous asteroid.

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See also

Astronomical objects known since antiquity

Planets of the Solar System

Terrestrial planets

References

[1] https://en.wikipedia.org/wiki/Mercury_(planet)

Also known as 1st planet, First planet, Hermeocentric orbit, Hermian, Hermiocentric orbit, History of Mercury (planet), Low-mass high-density planet, Mercurian, Mercurian System, Mercurio (planet), Mercury (astronomy), Mercury (dwarf planet), Mercury Planet, Mercury perihelion, Mercury the planet, Mercury's orbit, Mercury's orbit and rotation, Mercury/Planet, Orbit of Mercury, Planet I Mercury, Planet Mercury, Planet One, Sol 1, Sol I, Sol-1, Structure of Mercury, Suisei (mythology), The planet Mercury, Water Star.

, Crescent, Crust (geology), Culture of Japan, Culture of Korea, Culture of Vietnam, Cuneiform, David Rothery, Deferent and epicycle, Deimos (moon), Delta-v, Delta-v budget, Diffusion, Dipole, Drag (physics), Dynamo, Dynamo theory, E. M. Antoniadi, Earth, Earth's magnetic field, Eastern Time Zone, Ecliptic, Effective temperature, Egyptian Greeks, Ejecta, Elongation (astronomy), Enstatite, Epoch (astronomy), Equator, Escape velocity, Escarpment, European Space Agency, Exosphere, Exploration of Mars, Flux transfer event, Formation and evolution of the Solar System, Forsterite, Fossa (planetary nomenclature), Friedrich Wilhelm Bessel, Galileo Galilei, Gamma ray, Ganymede (moon), General relativity, Geocentric orbit, Geology of solar terrestrial planets, Geometric albedo, Germanic paganism, Giant-impact hypothesis, Giovanni Battista Zupi, Giovanni Schiaparelli, Giuseppe Colombo, Goldstone Solar System Radar, Gordon Pettengill, Gravitational compression, Gravity, Gravity assist, Greek language, Helium, Helium atom, Hermes, Highland, Hindu mythology, History of China, Homogeneity and heterogeneity, Houghton Mifflin Harcourt, Hubble Space Telescope, Hun Kal (crater), Hydrogen, Hydrogen atom, Hydronium, Hydroxide, Icarus (journal), Ice, Impact crater, Impact event, Infrared, Institute of Radio-engineering and Electronics, Inter-crater plains on Mercury, International Astronomical Union, International Celestial Reference System and its realizations, Invariable plane, Iron, Isostasy, JAXA, Johann Hieronymus Schröter, Johannes Kepler, John Bevis, JPL Horizons On-Line Ephemeris System, Julian year (astronomy), Jupiter, Kerala school of astronomy and mathematics, Kinetic energy, Krypton, Late Heavy Bombardment, Lava, Lexico, List of albedo features on Mercury, List of craters on Mercury, List of Solar System objects by size, Longitude, Lucky imaging, Lunar mare, Lunar phase, Magma, Magma ocean, Magnesium, Magnetic field, Magnetic reconnection, Magnetometer, Magnetosphere, Mantle (geology), Maragheh observatory, Mars, Maya civilization, Mercury (mythology), Mercury in fiction, Mercury's magnetic field, Meridian (astronomy), MESSENGER, Micrometeorite, Microorganism, Minute and second of arc, Moment of inertia factor, Moon, Mount Wilson Observatory, MUL.APIN, Multi-ringed basin, Nabu, NASA, Natural satellite, Nature (journal), Neon, Neptune, Newton's laws of motion, Nilakantha Somayaji, Nitrogen, Northern Hemisphere, Occultation, Odin, Olivine, Opposition surge, Orbital eccentricity, Orbital resonance, Orbital speed, Osculating orbit, Outgassing, Outline of life forms, Outline of Mercury (planet), Oxford University Press, Oxygen, Oxyrhynchus Papyri, Permanently shadowed crater, Perturbation (astronomy), Peterson Field Guides, Phobos (moon), Pierre Gassendi, Pine nut, Plagioclase, Plain, Planet, Planetary core, Planetary habitability, Planetary nomenclature, Planetesimal, Planets in astrology, Plasma (physics), Potassium, Potential energy, Potential well, Precession, Proper motion, Protostar, Ptolemy, Puerto Rico, Pyroclastic flow, Pyroxene, Qutb al-Din al-Shirazi, Radar, Radioactive decay, Radius, Ray system, Redox, Reflection (physics), Regolith, Rotation, Rotational frequency, Royal Astronomical Society of Canada, Royal Observatory, Greenwich, Rupes, Science (journal), Scientific modelling, Scientific Reports, Secular resonance, Semi-major and semi-minor axes, Shield volcano, Sidereal time, Sidereal year, Silicate, Silicon, Simon Marius, Sirius, Sodium, Solar constant, Solar eclipse, Solar maximum, Solar sail, Solar System, Solar wind, Southern Hemisphere, Space colonization, Space Science Reviews, Space weathering, Space.com, Spectrometer, Springer Science+Business Media, Sputtering, Sublimation (phase transition), Subsolar point, Sun, Sunlight, Sunspot, Synodic day, Telescope, Terrestrial planet, Tesla (unit), The New York Times, Thomas Harriot, Thrust fault, Tidal force, Tidal heating, Tidal locking, Titan (moon), Tolstoj (crater), Transit of Mercury, Tycho Brahe, Tychonic system, Ultraviolet, Underworld, Uranus, Urbain Le Verrier, Vallis (planetary geology), Velocity, Venus, Very Large Array, Vladimir Kotelnikov, Volcano, Vulcan (hypothetical planet), Washington, D.C., Water vapor, Wrinkle ridge, Wuxing (Chinese philosophy), X-ray, Xenon, 1566 Icarus.