“Bare” Super-Earths Offer Clues to Evolution of Hot Atmospheres Caption: Artist’s conceptual image showing the sizes of the planets observed in this study. The radius of TOI-1634 is 1.5 times larger than Earth’s radius and TOI-1685 is 1.8 times larger. The planets would appear red, due to the light from the red dwarf stars they orbit. (Copyright: Astrobiology Center) A group of astronomers from the Astrobiology Center, the National Astronomical Observatory of Japan, the University of Tok...