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

But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...

It could mean two bright comets will be visible in the night sky at the same time, on the peak night of a meteor shower.

The month of October is a treat for stargazers, as they’ll be able to see two different comets, one of which is long-tailed, ...

During September's total lunar eclipse, astronomers captured rare images of interstellar comet 3I/ATLAS glowing green, ...

3I/ATLAS, an interstellar object currently zipping through the solar system, is capturing the attention of astronomers, the public and even most of our deep space assets. Its hyperbolic orbit tells us ...

The images of Comet 3I/ATLAS were captured by the Gemini South telescope at Cerro Pachón in Chile on Aug. 27 as the icy ...

Gemini South caught Comet 3I/ATLAS “switching on,” as students and astronomers joined to see dust, gas, chemistry from ...

Named 3I/ATLAS, the comet is only the third known interstellar object to enter our solar system, and it's the largest and brightest one yet. Perhaps unsurprisingly, researchers around the world are ...

A telescope in Chile recently glimpsed 3I/ATLAS' glowing tail, which observations reveal has grown as the interstellar object cruises toward the sun.

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system.

This quiz invites you to chase comets through time and space, from ancient omens to modern scientific marvels.