First truly habitable exoplanet found

Astronomers believe they may have found a habitable planet at last, in the widely-studied Gliese 581 system 20 light years away in the constellation of Libra.

The Gliese 581 system has already yielded evidence of a number of exoplanets. This one, though, is in the ‘Goldilocks zone’ where the temperature could be bearable, liquid water could exist on the surface and an atmosphere be sustained.

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