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Space junk sparks crew scare on ISS
The crew of the International Space Station sought refuge in a Soyuz space capsule Thursday amid a threatened close encounter with a debris cloud, highlighting the growing dangers of space junk.
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Comet impacts can destroy stellar systems
Some stars have a high level of comet activity around them, and that could spell doom for any life trying to take root on any local planets. Ongoing research is trying to determine what fraction of stellar systems may be uninhabitable due to comet impacts.
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