"Brown dwarfs are born hot, then cool over time. And now one has been found that is literally as cold as ice. Not only that, but it’s very close to our solar system: Just 7.2 light years away! That makes it the seventh closest known star to the Sun."
"And this is the part that kills me: the best fit temperature he found was around 225–260 Kelvins. Even at the high end, that’s -13° C (9° F)."
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