<ul><li>The exoplanet Trappist-1b, located 40 light years away, has shown signs of a changing crust and potentially an atmosphere.</li><li>Trappist-1 is a system of exoplanets orbiting a dwarf star in the constellation of Aquarius.</li><li>Researchers used the James Webb Space Telescope to measure thermal radiation from Trappist-1b and found a surface composed of largely unchanged material.</li><li>The observations suggest the presence of volcanic activity, plate tectonics, or a thick carbon dioxide-rich atmosphere.</li></ul>

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