Mercury joins the night sky to complete a seven-planet alignment just after sunset for the end of February. Saturn leaves our ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

Up to seven planets from our solar system could be on display simultaneously, although spotting two of them might require a bit more effort. Over the next month, Mars, Venus, Jupiter, and Saturn ...

February will be an awe-inspiring month for astronomy enthusiasts who will be able to the see the solar system's planets ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

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

While claims of a “rare alignment” are overblown, you can still see up to six planets in the night sky this weekend. Here's ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

The research, yet to be peer-reviewed, sheds light on what could have changed the orbits of several planets in the solar ... have already been identified in our solar system, but their true ...

For much of January and February, you have the chance to see six planets in our solar system after dark, although two — Uranus and Neptune — will be hard to see without a telescope or high-powered ...