1. What is space junk and why is it concerning?
Space junk refers to defunct man-made objects in space, such as old satellites, spent rocket stages, and fragments from disintegration, all orbiting Earth. These objects, some as large as 10 centimeters across, orbit at speeds of about 10 kilometers per second, posing serious risks to active satellites, spacecraft, and even safety on Earth due to potential re-entry impacts.
2. How extensive is the space junk problem?
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