Mercury does not look like a world built for extravagance. It is small, battered, sun-scorched and gray. Yet far below that ...
Scientists using the James Webb Space Telescope have directly analyzed the surface of a distant super-Earth – and found a dark, airless, Mercury-like world A rocky planet 49 light-years from Earth has ...
A nearby “super-Earth” is giving scientists a rare look at the bare surface of a distant world, and it’s far from Earth-like.