It is estimated that hundreds of millions of pieces of space trash are now floating through our region of the solar system. Some of them are as large as trucks while others are smaller than a flake of paint.
There are a couple of relatively famous pieces of space trash. One is the glove that floated away from the Gemini 4 crew during the first spacewalk by U.S. astronauts.
the floating issue
The main problem with space trash is the danger it poses to working satellites and manned spacecraft. NASA frequently replaces Space Shuttle windows damaged by orbiting flakes of paint! In Figure 1 above, you see an image of an impact crater found on a Shuttle window. The crater is about 1 millimeter in size and was caused by a “space trash particle” about 100 microns in size hitting the window at a high speed. More than likely, this particle came from a solid rocket motor burn.