WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these "toasted marshmallow" planets could be more complicated than thought.

Mysterious spherical droplets in meteorites aren’t just cosmic oddities. They’re evidence of planetary formation.

I remember watching a documentary that described Jupiter as a gas giant. The image that came to my mind was a huge, soft ...

The shocking findings were part of a recent study in which astronomers effectively peered back in time to discover what Jupiter was like in its early years. Jupiter is not only the largest in the ...