WASP-121 b is the definition of an "extreme" exoplanet — it's so hot that it rains droplets of liquid iron. Now, astronomers ...

Powerful winds charged with metals have ... planets." She added: "It feels like something out of science fiction." DON'T MISS ...

Some exoplanets rain molten iron, others are largely composed of diamond ... Kepler-16 b: The Real-Life Tatooine Science fiction fans have long dreamed of planets with two suns. And Kepler-16 b, ...

Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese ...

Most scientists today agree that at least some water existed on the surface of Mars during the Noachian epoch, roughly 4.1 to 3.7 billion years ago.

Nearly three fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese ...