Seven Alien ‘Earths’ Found Orbiting Nearby Star

An illustration shows the view from just above one of the middle planets in the TRAPPIST-1 star system, which is now known to host seven Earth-size worlds. ILLUSTRATION BY M. KORNMESSER, SPACEENGINE.ORG/ESO

The Earth-size worlds orbit a star just 39 light-years away, and most may have the right conditions to host liquid water on their surfaces.

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