Astronomers are tracking a newly discovered interstellar visitor called 3I/ATLAS, and early research suggests it may be ...

I/ATLAS stands apart from other interstellar objects because of its size as well as pace, and will soon disappear from ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say.

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

In October, a newly discovered comet will streak so close to Earth that people may be able to make out its heavenly fireworks ...

This unexpected color raises new questions about the alien chemistry of comets from beyond our solar system. On Sept. 7 2025, ...

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...

The comet, named 3I/ATLAS, is only the third confirmed interstellar object ever seen in our solar system. That means it came ...

The images of Comet 3I/ATLAS were captured by the Gemini South telescope at Cerro Pachón in Chile on Aug. 27 as the icy traveler flew through the inner solar system. It's now about 238 million miles ...

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

We already knew that interstellar comet 3I/ATLAS was different from the other two interstellar objects known to have ...

On Sept. 30, 2016, the European Space Agency's Rosetta spacecraft purposely crashed into a comet. Rosetta launched in 2004 ...