Astronomers found Earth's 'older, bigger cousin.' And it's incredible.

It has a lot in common with Earth.

A long time ago in a galaxy far, far away ... wait, no.

Today, in our galaxy, NASA announced something big.

Astronomers from the Kepler spacecraft mission — a team devoted to spotting other worlds floating around out there in the abyss — announced the discovery of another planet.

That news (while admittedly pretty cool) isn't too groundbreaking on its own. After all, there are lots of other planets out there. But the...

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