NASA just found 'Earth 2.0'

Earth could become uninhabitable at any moment due to global warming, nuclear annihilation or having to deal with another Paul Blart movie, but luckily NASA just discovered a distant cousin.

Meet Kepler-452b, the planet the agency calls "Earth 2.0." It was discovered by NASA's floating observatory orbiting in the "habitable zone" of constellation Cygnus.

At a distance of 1,400 light-years away, it's too far away to travel to right now. But it's promising to hear that temperatures are...

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