Space junk

What is Space junk?

Space junk definition and meaning on Dictionary terms:
noun (often initial capital letters)
any of several U.S. space vehicles consisting of a reusable manned orbiter that touches down on a landing strip after an orbital mission, two reusable solid rocket boosters that drop off after initial ascent, and an expendable external tank containing liquid propellants.

 

reference: https://www.dictionary.com/browse/space-junk

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