WASP-121b, an already unusual planet, might have a remote origin that explains some of its peculiar properties—from iron rain ...

WASP-121b is unlike anything in our Solar System. This giant planet orbits its star so closely that it completes a full orbit ...

WASP-121b, also known as Tylos, is a giant, ultra-hot, gaseous planet located 858 light years from Earth. It's hot because it ...

The exoplanet in question is WASP-121b, also known as Tylos. Considered an "ultra-hot Jupiter," this gas giant orbits very close to its star, resulting in an average surface temperature of 4,600 ...

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.

Astronomers used powerful telescopes to look into the atmosphere of the exoplanet WASP-121b and found a weather system they've never seen before.

Astronomers used a giant telescope to observe the distant exoplanet WASP-121b, discovering that it formed in an unusual way.

This artistic impression depicts the stage at which WASP-121b accumulated most of its gas, as inferred from the latest results. The illustration suggests that the forming planet had cleared its ...

Researchers have peered into the atmosphere of planet WASP-121b and found its climate is stranger than anyone imagined.

WASP-121b's bottom layer was characterized by the presence of iron - a metal in gaseous form because of the incredible heat of the atmosphere.

As the researchers explain in a new paper published in the Astronomical Journal, WASP-121b is so hot and so close to its star that it’s been deformed into an oblong, football-like shape. The ...

The weather on WASP-121b has always been a bit wacky. Today, astronomers are one step closer to knowing why.