1992 – First flight of Space Shuttle Endeavour. STS-49: Capture and redeploy Intelsat VI; first three-man EVA, longest US EVA since Apollo 17.
2003 – The transit of Mercury across the face of the Sun. This rare event was used by scientists to calibrate instruments on the ESA/NASA SOHO spacecraft, measure its roll angle, and study image distortions and stray light effects.
