All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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.

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 ...