Some Planets Rain Rocks

On Earth, rain is made of water. On other worlds, it’s much worse. Take K2-141b, a lava planet where temperatures reach about 3,000 K (roughly 2,700°C) on the day side—hot enough to vaporize rock. This creates an atmosphere of rock vapor. Supersonic winds carry that vapor to the night side, where it condenses and rains down as actual stone, and the liquid rock flows back toward the day side through the magma ocean. It’s a literal stone cycle, like Earth’s water cycle but with lava. Imagine needing an umbrella for molten rock.