So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

Scientists measure a Saturn-sized rogue planet drifting through the Milky Way using rare Earth and space observations, revealing how planets can be ejected from their original systems.

Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty ...

The team has estimated that the planet is about 22 percent the mass of Jupiter, so roughly a Saturn-sized world. It is ...

Nearly every galaxy has a supermassive black hole in its core. Whether the black hole forms first and then the galaxy around ...

A young world drifting alone through space is putting on one of the most violent growth spurts astronomers have ever seen, ...

The sun’s outer atmosphere resembles a pufferfish.

When scientists cracked open the first grains from asteroid Bennu, they expected a time capsule of rock and dust. What they ...

Two separate research teams have observed a previously unseen microlensing event, confirming the existence of a particular ...

An exosyzygy – an alignment of three celestial objects around another star – is predicted to happen later this year, but it ...

ExpressVPN will bundle an extra four months to your two-year plan at no extra cost, so you won't see another charge from the ...