How did life on Earth originate?

Did life arrive from space? Rather than developing here, could the first life forms have been catapulted to Earth on a chunk of rock from outer space? Investigations show that microbes are capable of surviving just such a journey.

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<p><a href="http://www.physorg.com/news94835474.html">How did life on Earth originate?</a></p> <p>Did life arrive from space? Rather than developing here, could the first life forms have been catapulted to Earth on a chunk of rock from outer space? Investigations show that microbes are capable of surviving just such a journey.</p>