Using the James Webb Space Telescope, astronomers have discovered an example of a new class of exoplanet, and it smells like ...

The planets of the Solar System are not representative of all the types of planets that exist elsewhere in the galaxy. There are worlds like hot Jupiters, gigantic and very hot, as well as ocean ...

The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.

Water worlds could be surprisingly common in our galaxy — but they probably don’t look like you expect. If we find evidence of life on alien worlds, it will probably be on a planet somewhere between ...