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5 Things to Know About Alien Planet Kepler-186f, ‘Earth’s Cousin’

A newly discovered planet nicknamed “Earth’s cousin” has just been found 490 light-years from Earth.

The planet, called Kepler-186f, is the first Earth-size planet found in the habitable zone of its star. Only about 10 percent larger than Earth, Kepler-186f is the closest planet to Earth in size ever found in the habitable zone of its star. What else do you need to know about the new alien planet discovery?

Here are five things to keep in mind about Kepler-186f:

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If you’re inside on Tumblr instead of outside watching the lunar eclipse, we feel obliged to notify you that, thanks to NASA and the Internet, you can see the view from the Marshall Space Flight Center in Alabama without leaving your computer.

Here, science reporter Deborah Netburn explains just what a “blood moon” is, exactly. We’ll be filling up this photo gallery as the night goes on. And if you’d like to see a bigger version of the infographic up top, you’ll find it on our science blog.

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