Meet Earth's 'Bigger, Older Cousin'

Washington, D.C. - Meet Earth's 'bigger, older cousin'.

That's what NASA is calling a newly-discovered planet.

"Kepler-452-B" is 60-percent larger in diameter, but scientists say it's the first planet similar to the Earth's size.

Its mass and composition aren't known yet, but previous research indicates its surface could be rocky.

NASA says the discovery marks a milestone in the mission to find another planet like Earth and provides the opportunity to better understand the Earth's evolving environment.

So, where is it?

Not close by...1,400 light years away, in the constellation Cygnus.

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