Question

what is ment by space debris?​

Answer 1

Space debris, also called space junk, man-made material that is orbiting Earth but no longer functional. This material can be as large as a discarded rocket stage or as small as a microscopic chip of paint. ... Objects below 600 km (375 miles) orbit several years before reentering Earth's atmosphere.

Answer 2

Natural debris found in solar system like asteroids,comets and mateoroids.