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Hidden Universe HD: NASA's Spitzer Space Telescope

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Homes Away From Home? Revisiting the Seven Planets of TRAPPIST-1

Play Feb 21•

One year ago, astronomers announced the discovery that seven roughly Earth-sized worlds orbited around the nearby star TRAPPIST-1. Now a year later, additional data have refined our understanding of these planets.We now know more about the TRAPPIST-1 system than any other solar system other than our own.

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