View Full Version : Astronomy Without A Telescope Say No To Mass Extinction

2010-Mar-28, 01:40 AM
You may have heard that there is an 86 per cent chance that in a mere million years or so Gliese 710 will drift close enough to the solar system to perturb the Oort cloud and perhaps send a rain of comets down into the inner solar system.(...)Read the rest of Astronomy Without A Telescope [...]

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