A new study links the sun's 11-year cycle to accelerated orbital loss, with debris falling faster once sunspot numbers near ...

A scorching, airless world just 48 light-years away is offering scientists a rare glimpse into the geology of distant planets ...

A rocky planet nearly 50 light-years away appears to be airless, dark, and covered in volcanic or weathered rock, according ...

The atmosphere is between 5 million and 10 million times thinner than Earth's atmosphere. A very small body, far from the sun ...

While Galileo's observations killed off the old model, we would need to wait centuries for conclusive evidence that Earth ...

The findings could more than double our current database of worlds that loop around binary star systems. But researchers need ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere. That would make it the solar ...

If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere.

In the far reaches of our solar system - beyond the outermost planet Neptune - resides a host of icy and desolate ​celestial ...

Rogue planets sound like rare travelers among the stars, freed from the gravitational constraints of a host system, left to ...

The solar system isn’t as flat as it seems. This video reveals the hidden 3D structure surrounding our planetary plane, from ...

A major solar storm, or another disruption, could overwhelm Earth's satellite system and trigger catastrophic collisions ...