Space junk, in others words is trash floating around our Earth caught in a circular orbit. Space junk has caused problems and I will happily list a few for the answer. For one, if it is biggest...
When an object is in space, it is usually acted upon by some form of gravitational force from a large body of which keeps it some form of orbit. In addition to this, Newton's Laws pretty much state...
Space junk is mainly old satellites that we never bothered to bring back to earth. In other words, we launch space junk to space, but it's not junk at launch. Get it?
Space junk gets into space by astronauts dropping there gloves or a tool when they are working at a space station, or things that come off a space station. in other words the only space junk there...