TRAPPIST-1 exoplanet's rocky surface may not support life, says James Webb Space Telescope.

New data from NASA's James Webb Space Telescope (JWST) shows that the atmosphere of a rocky exoplanet in the TRAPPIST-1 system is either non-existent or incredibly thin, making it unfavorable for hosting life as we know it. Astronomers using JWST were able to calculate the amount of heat energy coming from TRAPPIST-1 c, revealing that the dayside temperature of the rocky world is about 225 degrees Fahrenheit (107 degrees Celsius) — the coolest rocky exoplanet ever characterized.