space junk

World English Dictionary
space junk
objects such as artificial satellites, material discarded from space stations, etc that remain in space after use

Collins English Dictionary - Complete & Unabridged 10th Edition
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Cite This Source's 21st Century Lexicon
Main Entry:  space junk
Part of Speech:  n
Definition:  debris from spaceships and satellites that remains in Earth's orbit
Example:  Radio signals can bounce off of floating space junk.'s 21st Century Lexicon
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