1993 - Space shuttle Endeavour (STS-54) lifted off on its third flight from Cape Canaveral on this date. Astronauts John H. Casper, Donald R. McMonagle, Mario Runco Jr., Gregory L. Harbaugh and Susan J. Helms spent 6 days in space delivering a tracking and data relay satellite into orbit as well as other tasks. The Endeavour space shuttle would go on to fly another 22 missions before being retired in 2011. The spaceship is now on display at the California Science Center in Los Angeles.