Space & Astronomy
October 4, 2009 ·
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Image Credit: NASA/JPL
Source: Scientific American | Comments (0)
What (maybe) didn't kill the dinosaurs
By T.K. RandallOctober 4, 2009 ·
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Image Credit: NASA/JPL
A new mechanism devised to explain how icy bodies from the Oort cloud get past Jupiter and Saturn has revealed that it is unlikely that large cometary showers would have caused more than one prehistoric extinction event.
The chunks of ice and dust that make their home in the Oort cloud, far beyond the orbit of Pluto, sometimes become dislodged and head into the solar system as streaky comets.
Source: Scientific American | Comments (0)
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