At present within the historical past of astronomy, slingshot maneuvers put Galileo on a path to Jupiter.
NASA’s diagram of Galileo’s trajectory illustrates its flybys of Venus and Earth earlier than heading off to Jupiter. Credit score: NASA/JPL-Caltech
- The Galileo spacecraft launched on October 18, 1989, aboard Area Shuttle *Atlantis*, commencing its mission to Jupiter.
- Its authentic direct trajectory was modified because of the cancellation of a booster post-*Challenger* catastrophe, necessitating the implementation of three planetary gravity assists.
- These gravity assists comprised a Venus flyby on February 10, 1990, adopted by two Earth flybys on December 8, 1990, and December 8, 1992, respectively.
- Galileo efficiently reached Jupiter on December 7, 1995, subsequently spending eight years as the primary spacecraft to orbit an outer planet, gathering knowledge on the gasoline big, its rings, and 5 of its moons.
On Oct. 18, 1989, the Galileo spacecraft launched aboard Space Shuttle Atlantis, step one in its journey to Jupiter. Though the unique plan for Galileo had been a direct path to the gasoline big, the booster that might have powered that journey was canceled after the Challenger catastrophe, attributable to security issues. A brand new plan was vital: As an alternative, three planetary gravity assists can be used to place Galileo on the appropriate trajectory. The primary, a flyby of Venus, was accomplished efficiently on Feb. 10, 1990.
On Dec. 8, 1990, Galileo made its first flyby of Earth, slingshotting by at a distance of 597 miles (960 kilometers). The gravity help was profitable, growing the craft’s velocity and sending it off on an orbit across the Solar earlier than its second Earth flyby, precisely two years later. The three mixed gravity assists have been sufficient to ship Galileo off to Jupiter, the place it arrived on Dec. 7, 1995. It might spend the following eight years there – the primary spacecraft to orbit an outer planet – amassing knowledge on the gasoline big, its rings, and 5 of its moons.
