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The Search for Life in the Universe Just Got a Lot More Interesting

Discovering several Earth-size planets around TRAPPIST-1 means the likelihood of finding life within the habitable zones of other star systems could be much greater than previously thought.

February 24, 2017
4:09 PM EST
This chart shows, on the top row, artist concepts of the seven planets of TRAPPIST-1 with their orbital periods, distances from their star, radii and masses as compared to those of Earth. | Image via NASA.
A comparison of the TRAPPIST-1 system to our solar system. | Image via NASA.