Here's where Comet 3I/ATLAS, Lemmon and SWAN are in the Halloween sky.

An ominous-looking nebula named NGC 246 lurks in the constellation Cetus about 1,600 light-years away from Earth. It is ...

Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is ...

As 3I/Atlas neared its closest point to the sun in its orbit, the internet was abuzz with curiosity about the comet.

Does a video clip show new footage of the Comet 3I/ATLAS? No, that's not true: This video did not originate from any research ...

The chemical signatures we're observing may reflect both the comet's ancient origins and its long journey through ...

An interstellar comet that originated outside our solar system has just made its closest pass to the sun, brightening ...

JUICE might be bound to Jupiter, but it is fortuitously in place to peek at this object from beyond the stars.

A pair of once-in-a-lifetime comets are rocketing through our skies right now, and it's a rare treat because they won't be ...

I/ATLAS is the third interstellar object ever discovered in our solar system. Telescope observations suggest it is a roughly 7-mile-wide (11 kilometers) comet zooming at more than 130,000 mph (210,000 ...

As the third confirmed interstellar object to pass through our solar system, 3I/ATLAS is prime for new discoveries. It was ...

This is only the third interstellar comet scientists have observed. Its extreme brightening, unusual composition, and intense ...