NASA: National Aeronautics and Space Administration


Ask an Astrobiologist
"What exactly are the methods used for dating fossils and/or meteorites believed to be in excess of 1 billion years old? Are errors common?"
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  1. Question

    What is the probability of finding intelligent life in the universe?

    No one knows. What is certain is that if we do not search, we will not find any (something pointed out by Phillip Morrison more than 50 years ago). David Morrison
    NAI Senior Scientist

    October 30, 2006