The Galileo spacecraft, launched from Space Shuttle Atlantis (STS-34) October 18, 1989, made the first flyby of an asteroid, 951 Gaspra, October 29, 1991. After being launched, it made flybys of Earth and Venus to gather speed to make its journey to the asteroid belt.
Galileo revealed Gaspra to be a cratered, elongated body, measuring 11.8 x 7.5 x 6.8 miles.
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