Likes of Apollo warmly received in such a corridor
I believe the answer is:
re-entry
'corridor' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see an association between them that I can't see?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for re-entry that I've seen before include "A spacecraft's track coming back into atmosphere" , "Spacecraft's return to earth" , "Hitting earth's atmosphere again" , "Return from outer space" , "Return of a spacecraft to the earth's atmosphere" .)