Answering my own question;;
It was in 1994
Space Shuttle Columbia
I am pretty sure that a space shuttle is found in the thermosphere or mesosphere.
The space shuttle reaches 17,850 mph before leaving earth's atmosphere.
Because of the enormous amount of friction between Earth's atmosphere and the Space Shuttle.
Second space shuttle in space was Challenger, but second space shuttle ever was Enterprise, what was made for testing in atmosphere.
The shuttle uses the atmosphere to slow itself down from orbital speed.
The space shuttle travels in the thermosphere layer of the atmosphere, which is the layer located above the mesosphere. This layer is where temperatures can reach very high levels due to its proximity to space.
To break the atmosphere and go into space easily.
The space shuttle that exploded upon reentry into Earth's atmosphere in 2003 was the Space Shuttle Columbia. The disaster resulted in the loss of all seven crew members on board.
Columbia heated up and broke apart while entering the atmosphere.
600km
A space shuttle still has to leave the atmosphere, we aren't building them in space. While leaving the atmosphere a space shuttle causes a lot of friction as it rubs against the air on the way up.