Wiki Wormhole: Meet your neighbor—an Earthlike planet just 4 light-years away

With more than 5.2 million articles, Wikipedia is an invaluable resource, whether you’re throwing a term paper together at the last minute, or searching for some way to get a do-over on all of 2016. We explore some of Wikipedia’s oddities in our 5,258,625-week series, Wiki Wormhole.

This week’s entry: Proxima Centauri b

What it’s about: In 2013, Mikko Tuomi of the University Of Hertfordshire discovered a planet orbiting Proxima Centauri, the star nearest to our sun. Further examination showed the planet to be in the “Goldilocks zone”—neither too hot nor too cold for water to exist as a liquid. As both NASA and Elon Musk set their sights on Mars, could Proxima b be the first planet humanity visits outside our solar system? And could it happen in our lifetime?

Strangest fact: Depending on how you look at it, Proxima b …

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