A theory by Albert Einstein has helped astronomers discover a rare exoplanet, sparking new ideas of where they can be found.

A little-known fact to the general public is that there's more moving around Jupiter's orbit than just the giant gas planet.

Using gravitational microlensing, scientists have discovered a rare, large planet at the edge of the Milky Way. The planet is ...

In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...

NASA have found something new moving in our Solar System. Even thought it's not water, still a phenomenon worth of time ...

If Apollo 13 left you starstruck, these 15 space thrillers deliver cosmic drama, heart, and zero-gravity excitement.

"We show how planets in binary systems can undergo a mirrored migration process, so that both stars end up with hot Jupiters.

If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...

Gravitational assists are an emblematic example of why space travel is hard —it is exactly rocket science, after all. Gravity ...

Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about ...

As Io migrates away from Jupiter, its gravity causes a kickback — sort of like how a gun recoils when it's fired — that has contributed to the tilts of the smaller moons.

Jupiter is our solar system's biggest planet by far. It used to be twice as large: Study A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow ...