The solar system is portrayed as a dynamic, gossip-fueled family, with each planet offering snide comments about one another, ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Predictions are uncertain, but the solar system may be pushed farther from the galactic core or even ejected entirely from ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

“They’re the only objects at this stage, in the solar system, for which we have pretty much no idea what they are,” says Pascal Lee at the SETI Institute in California. “We know what other ...

But a new study indicates that such rings, if created, could remain stable for a million years, even while being gravitationally pulled by other solar system objects. The findings deepen the ...