John D. RuleySocial Links Navigation Latest articles by John D. Ruley Intelligence: A Rare Cosmic Commodity By John D. Ruley published 10 April 08 A model suggests that intelligent life may be very rare in the universe. The Universe Get the Space.com NewsletterBreaking space news, the latest updates on rocket launches, skywatching events and more!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MORE FROM SPACE...1Final trailer for Prime Video's 'Secret Level' looks out of this world2SabersPro Obi Wan Ep3 lightsaber review3Watch Russian Progress cargo spacecraft launch to the ISS on Nov. 214Supermassive black holes bent the laws of physics to grow to monstrous sizes5The not so 'wicked' path from 'The Wizard of Oz' to the moon landing
Intelligence: A Rare Cosmic Commodity By John D. Ruley published 10 April 08 A model suggests that intelligent life may be very rare in the universe.
