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space junk

British  

noun

  1. objects such as artificial satellites, material discarded from space stations, etc that remain in space after use

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Critical technical aspects of such operations need to be resolved, particularly harm done to GPUs by high levels of radiation and extreme temperatures as well as the danger of being hit by space junk.

From Barron's

But that would require 24-hour monitoring to adjust the OCO orbit to avoid space junk — not an infrequent occurrence.

From Los Angeles Times

This isn’t the first time space junk has crashed to Earth.

From Salon

Falling space junk is starting to become a real problem.

From Salon

Of course, a direct bodily hit isn’t the only hazard of falling space junk.

From Salon