For the first time, astronomers have spotted a coronal mass ejection exploding from a star other than our Sun.

Interstellar comet 3I/ATLAS, only the third of its kind ever detected, is speeding away from the Sun. Here's how to watch its ...

Jupiter’s early growth carved rings in the solar system, delayed meteorite formation, and kept planets like Earth in stable ...

Astronomers say they spotted signs of a giant explosion releasing from a star beyond our solar system, one powerful enough to ...

Astronomers have, for the first time, detected a massive explosion from a star outside our solar system, specifically a ...

The interstellar comet 3I/ATLAS, displaying unusual properties and sparking alien theories, is simply the oldest observed comet.

Could a frozen traveler from another star system hold secrets about worlds beyond our own? Astronomers think 3I/ATLAS might. This comet, the only third confirmed interstellar object ever detected, ...

Catch the livestream of interstellar comet 3I/ATLAS moving away from the Sun tonight at 11:15 pm ET on YouTube's Virtual Telescope Project.

Interstellar comet 3I/Atlas has revealed a mysterious anti-tail structure, leaving scientists puzzled and exploring new ...

New high-resolution images of 3I/ATLAS show a longer, brighter, and more structured tail with sunward jets and anti-tails.