Thursday, June 28, 2012

Answer t0 Question 13

There are about 500,000 pieces of space junk, down to items about 0.5 inches (1.27 centimeters) wide in orbit. Of those, about 21,000 objects are larger than 4 inches (10.1 cm) in diameter, and are being constantly tracked by the Department of Defense's U.S. Space Surveillance Network. These are items like spent rocket stages and broken satellites such as Galaxy 15.

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