Published in
Royal Statistical Society, Significance, 3(6), p. 142-144, 2009
DOI: 10.1111/j.1740-9713.2009.00384.x
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Life: what is the chance that we are alone?
Journal article published in 2009 by
Mark Burchell 
This paper is made freely available by the publisher.
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Abstract
Abstract 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.