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 ...

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.

If WASP-121b were any closer to its host star, it would be ripped apart by the star’s gravity. The top of the planet’s atmosphere is heated to 2,500 degrees Celsius – so hot that iron can ...

WASP-121b is massive — nearly twice the size of our Jupiter. And because it orbits much closer to its host star than Mercury orbits around the Sun, its atmosphere heats up to more than 4,500 ...

The exoplanet WASP-121b, which resides about 900 light-years from Earth, is an egg-shaped scorcher. Temperatures on the planet's day side can reach up to 4,600 degrees Fahrenheit.

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 an exoplanet located 850 light years from Earth, orbiting its star in less than two days—a process that takes Earth a year to complete. WASP-121b is very close to its star—about ...

WASP-121b is snuggled up close to a star that's hotter than our own sun. Gravitational forces are doing a number on the exoplanet, stretching it into the shape of an American football.

Sizzling exoplanets have been found before, but WASP-121b continues to surprise astronomers. In 2017, they discovered a water vapor atmosphere that glowed because it was so hot.

Sizzling exoplanets have been found before, but WASP-121b continues to surprise astronomers. In 2017, they discovered a water vapor atmosphere that glowed because it was so hot.