According to NASA, millions of pieces of space junk orbit Earth. Of these, about 500,000 are the size of a marble or larger, and 20,000 are larger than a softball. This increasing population of debris poses a threat to spacecraft such as the International Space Station. The Department of Defense’s Space Surveillance Network tracks those pieces that measure two inches or larger, but up to this point no-one has accurately predicted the entry point into the atmosphere of those whose orbits have decayed. Doing so could help avoid hazardous collisions with spacecraft.
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- …………. cooling ahead.
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