Observations
Earth-Like Planets Fill the Galaxy
January 8th, 2013 |
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LONG BEACH, Calif.—Look up on a starry night. Almost every one of those tiny pricks of light is home to an unseen world. Our Milky Way galaxy is full of planets—100 billion or more—and many of those planets are Earth-like rocks (although our solar system still appears to be an oddball). Such are the major [...]
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