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

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

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 ...

Named 3I/ATLAS, the comet is only the third known interstellar object to enter our solar system, and it's the largest and ...

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

New images reveal interstellar comet 3I/ATLAS beginning to grow a signature tail as it zooms closer to the sun ahead of a ...

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

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet ...

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

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

On Sept. 11, 1985, the International Cometary Explorer, or "ICE" became the first spacecraft to fly by a comet. Originally ...