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Planets Large and Small Populate Our Galaxy

Pinned on October 21, 2012 at 2:52 am by Admin

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Planets Large and Small Populate Our Galaxy

Astronomers have discovered more than 700 alien planets beyond the solar system, and the count is rising all the time. Some are large and hot, and others are smaller and cooler, but scientists are still on the lookout for an Earth twin.

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