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"Earth-Mars" Collision May Have Hit Alien Solar System
A planet the size of Mars races toward a planet like Earth, smashes into its
crust and mantle, and ejects debris that conglomerates into a large moon. Sound familiar? It's what scientists think happened billions of years ago to Earth. But the same drama may have unfolded much more recently around a nearby star in the constellation Hercules. More at http://KenCroswell.com/NLTT43806.html |
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