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 sits so close to its sister star. In fact, it takes just over a day, or 30 ...

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.

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 ...

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

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

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 ...

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.

Learn more about the atmosphere of WASP-121b, or Tylos, whose winds are layered like no other planet’s.