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 ...

The New Horizons Pluto flyby revealed unexpectedly complex geological features on dwarf planets, prompting further investigation into the diversity within the Kuiper Belt. Several dwarf planets, ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

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

A distant world may have formed inside a doomed star. This star was ripped apart by its smaller, denser companion – a dense stellar corpse called a white dwarf – and the planet could have formed from ...

A strange 200 million-year-old object with the mass of a planet has been discovered 20 light-years from Earth, outside our solar system. The "rogue," as it's referred to by researchers, is producing ...

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 ...

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 ...

The planets of our solar system aren't randomly scattered. They all orbit in a near perfect, flat disc. The reason for this ...