Astronomers are racing to study 3I/ATLAS, an interstellar comet whose strange behavior reveals new clues about how other ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

Exoplanets, celestial bodies that orbit stars beyond the familiar confines of our solar system, continue to captivate scientists around the world. Their diverse and often unexpected attributes offer ...

Pluto is a bit of a loner. The dwarf planet is no longer considered a regular planet; it does not orbit on the same plane as ...

While opposition itself is a one-night event, taking place on Sept. 21, Saturn's glow won't fade quickly. The planet will ...

Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

Is it a full moon tonight? Wondering what is the planet and bright star shining next to the moon? Here's what to know and how to see it.

Regulus, a distant star, Venus and our moon will be visible during a conjunction tonight, and how Californians can best see it.

Did you see the bright star next to the moon? That was Venus, and part of a conjunction between the moon, Venus and the star ...

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

Earth has a new friend — and it's been waiting for us to notice it for decades. In a new study published in the journal ...

Apophis will zoom safely past the Earth closer than the orbits of geosynchronous satellites on April 13, 2029. As well as the ...