Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...

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

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

There could be a ninth planet in our solar system that's lying in wait to be discovered - and no, it's not Pluto. Our solar ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.

The planets of the solar system orbit the sun in a complex and ever-shifting ballet, which can see them appear as glorious ...

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

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between five and 18, plus hundreds of potentially undiscovered ones, depending on whom ...

The sun’s outer atmosphere resembles a pufferfish.

The upcoming year will offer a blood-red moon, spectacular meteor showers and the first glimpse of the sun’s corona since ...