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TRAPPIST-1 planets rocky, and may hold water

The TRAPPIST-1 system
An artist's impression of the TRAPPIST-1 system. Photo: NASA / JPL-Caltech

New measurements of several Earth-like planets in the TRAPPIST-1 system — located about 39 light-years away — suggest they are rocky and that some could have atmospheres that would allow life to survive there, ScienceNews reports.

Why it matters: The studies (here and here) will help researchers to set priorities for the James Webb Space Telescope — the Hubble Space Telescope's successor scheduled to launch next year and search for life on planets around other stars.