STS-31 | space shuttle mission | Britannica

…his second spaceflight, he piloted STS-31 (April 24–29, 1990), on which the space shuttle Discovery deployed the Hubble Space Telescope.

…as a mission specialist on STS-31, launching on the Discovery space shuttle on April 24, 1990. The STS-31 crew successfully deployed the Hubble Space Telescope into orbit. The shuttle landed at Edwards Air Force Base in California on April 29, 1990.

On STS-31 (April 24–29, 1990), the space shuttle Discovery deployed the Hubble Space Telescope. On STS-45 (March 24–April 2, 1992), Sullivan was the payload commander of the Atmospheric Laboratory for Applications and Science, a laboratory on a pallet housed in the space shuttle Atlantis’s cargo bay…