Far beyond the bright planets, in the dim outskirts of the Solar System, astronomers keep stumbling on objects that refuse to ...

New James Webb telescope observations of the 'super-puff' planet WASP-107b show that the exoplanet's runaway atmosphere is ...

The distant world WASP-121b is so hot that it hosts metallic clouds and rains gems. Astronomers discovered the gas giant planet — dubbed a "hot Jupiter" — in 2016, but have continued to investigate ...

Venus is often called Earth's evil twin due to its size, mass, material composition, and density. It even feels like Venus should've become a second Earth. However, it ended up being one of the ...

Astronomers are investigating a strange class of exoplanets known as eccentric warm Jupiters — massive gas giants that orbit their stars in unexpected, elongated paths. Unlike their close-orbiting ...

Scientists found an intriguing world in our galaxy. They confirmed the existence of a rocky planet, called a "super-Earth," that's some six times as massive as Earth. While the world HD 20794 d is ...

Astronomers are just beginning to scratch the surface of the complex, and sometimes violent, relationships between planets ...

SAN JOSE, Calif. -- In what astronomers called an exciting step toward detecting Earth-like planets, a spacecraft operated by NASA's Ames Research Center has found five strange new planets, beginning ...