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Extrasolar Life image

Extrasolar Life Briefing

  • 3,000+ visible galaxies (Hubble Telescope)
  • 100 billion stars in the Milky Way
  • 20-50% of stars may have planets
  • 1-5 planets per star may be capable of sustaining some life
  • Expected lifetime of Sun and Earth: 10 billion years
    Credit: NASA

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