John D. Ruley 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...1Scientists discover super-Earth exoplanets are more common in the universe than we thought2China's Shenzhou 20 astronauts arrive at Tiangong space station3The 1st 'Predator: Badlands' trailer looks amazing, but it's the 'Alien' universe teases that have us most excited (video)4James Webb Space Telescope finds a wild black hole growth spurt in galaxies at 'cosmic noon'5Fan-favorite Clone Wars character returns for 'Star Wars Outlaws' DLC in May, plus we're getting a Nintendo Switch 2 port
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.
