Webb finds an atmosphere on scorching lava world HD 3167 b

Astronomers led by the University of Chicago report in The Astrophysical Journal Letters evidence of an atmosphere around HD 3167 b, a rocky super-Earth 154 light-years away. The lava world orbits its star in one Earth day, and its dayside is cooler than the theoretical maximum, suggesting heat is redistributed by an atmosphere.

• HD 3167 b lies 154 light-years away in the constellation Pisces
• It completes one orbit around its star in a single Earth day
• Its dayside is cooler than the maximum, hinting at an atmosphere
• It is the coolest lava world yet found with an atmosphere