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How many 'other Earths' are there?
Maybe billions
 
An artist's rendition of the newly discovered planet named PH1, seen in the foreground. The planet is 3,200 light-years away from Earth.
An artist's rendition of the newly discovered planet named PH1, seen in the foreground. The planet is 3,200 light-years away from Earth.
Haven Giguere/Yale
 

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