Galileo
Space probe
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Galileo was an American robotic space probe that studied the planet Jupiter and its moons, as well as the asteroids Gaspra and Ida. Named after the Italian astronomer Galileo Galilei, it consisted of an orbiter and an entry probe. Wikipedia
Launch date: October 18, 1989
Max speed: 108,000 mph
Manufacturers: Jet Propulsion Laboratory and Messerschmitt-Bölkow-Blohm
Speed on orbit: 29.83 miles/s
Launch site: Kennedy Space Center Launch Complex 39
Orbit height: 20,505 mi
Cost: 1.6 billion USD