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Keeping the Solar System clean to find alien life

发布时间 2016-08-25 14:36:56    来源

摘要

Humans have always wanted to know if life exists elsewhere in the Universe, but how will we know an alien if we see one? That’s where planetary protection comes in — the idea of avoiding harmful contamination of our Solar System. Subscribe: https://goo.gl/G5RXGs Check out our full video catalog: https://goo.gl/lfcGfq Visit our playlists: https://goo.gl/94XbKx Like The Verge on Facebook: https://goo.gl/2P1aGc Follow on Twitter: https://goo.gl/XTWX61 Follow on Instagram: https://goo.gl/7ZeLvX Read More: http://www.theverge.com

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