Prior to the Columbia disaster, what were the names of all of the ships in the shuttle fleet?

Answer 1

you had
Atmospheric Shuttle Enterprise, Although the first shuttle, she was not fitted with engines or active heat shield. she was only used for testing.
Space Shuttle Columbia, destroyed in 2003
Space Shuttle Challenger, destroyed in 1986.
Space Shuttle Discovery,
Space Shuttle Atlantis,
Space Shuttle Endeavor, the successor to challenger

The Buran program space craft. Destroyed after 1 flight.

Answer 2

Columbia, Challenger, Discovery, Endeavour, and Atlantis.
Enterprise wasn't a fully functional craft it had no engines, the first fully functional was Columbia.

Answer 3

Columbia, Challenger (exploded 1986), Endeavor, Discovery, Atlantis, and Enterprise. (I think that is all of them.)

Answer 4

There was an Enterprise, a Discovery & there was once a Challenger.