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.

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

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

Over four billion years ago, the solar system was a wild and dangerous place. Swirling clouds of dust and gas slowly turned into the planets we know today. One giant, Jupiter, grew quickly and changed ...

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 ...

Eleven times wider than Earth. Over 300 times more massive. And a million times more terrifying. Jupiter may look like a beautiful ball of swirling clouds, but on the inside, it is a gaseous inferno.