Challenger was replaced by building the Endeavor from spare parts. Columbia was not replaced.
After the Challenger disaster in 1986, NASA retired its remaining three Space Shuttle orbiters— Discovery, Atlantis, and Endeavour were built as replacements. Following the Columbia disaster in 2003, the decision was made to retire the remaining Space Shuttle fleet, and they were not replaced with new shuttles.
Challenger is 1986. Columbia is 2003.
The two space shuttles that tragically crashed were the Challenger in 1986 and the Columbia in 2003.
challenger and the Columbia
Enterprise, Columbia, Challenger, Discovery, Atlantis, Endeavor
The American space shuttles were named: Enterprise, Columbia, Challenger, Discovery, Atlantis, and Endeavour.
The Columbia and the Challenger
challenger and the Columbia
Columbia and Challenger
The Endeavour
challenger, it exploded in 2002 when one of the rockets malfunccioned & challenger blewup
The Columbia and the Challenger.