Life: what is the chance that we are alone?

  • Author: Mark Burchell
  • Published: Aug 24, 2009 - From issue: Volume 6 Issue 3 (September 2009)
  • Doi: 10.1111/j.1740-9713.2009.00384.x

The Earth is full of life. If life evolved here, why not elsewhere? The Universe is a big place and our galaxy has many stars with planets. So are we alone? What is out there? And how do we know?Mark Burchell looks at the probability of life beyond our planet.

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