Has NASA discovered another Earth? Perhaps
Astronomers have discovered a planet nearly the same size as Earth that orbits in its star's habitable zone, where liquid water could exist on its surface.
from USATODAY - News Top Stories https://ift.tt/2KaQ8AV
Astronomers have discovered a planet nearly the same size as Earth that orbits in its star's habitable zone, where liquid water could exist on its surface.
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