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STS-61-G was a United States Space Shuttle mission planned to launch on 20 May 1986 using Atlantis. The main objective of this mission was to launch the Galileo spacecraft towards Jupiter using the Centaur-G upper stage. It was cancelled after the Challenger disaster.
Randy Hunt made a limited number of this reproduction of a mission that was canceled due to the Challenger mishap. This mission was to launch Galileo. There are only 50 of these patches in existance.