: The "workhorse" of the fleet, it flew 39 missions, including the launch of the Hubble Space Telescope.
: A prototype used for atmospheric flight tests; it never flew in space but is currently on display at the Intrepid Sea, Air & Space Museum. How It Worked The Space Shuttle
: Known for carrying the first American woman and African American into space; destroyed 73 seconds after liftoff in 1986. : The "workhorse" of the fleet, it flew
Five flight-worthy orbiters were constructed for the program: : The "workhorse" of the fleet
: Built as a replacement for Challenger, it completed 25 missions, including the first service mission for Hubble.
40 Years Ago: Space Shuttle Enterprise rolls to the Pad - NASA