Given 3I/ATLAS' highly eccentric orbit, this will be its one and only visit to our solar system, as its trajectory does not ...

A team of international astronomers, including a University of Michigan doctoral student, were the first to publish the ...

A rare interstellar comet is flying through our solar system. Here's how—and when—you might be able to see Comet ATLAS from ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

A cosmic traveler from another star system is currently visiting our solar neighborhood. Scientists are closely observing ...

Discover 3I/ATLAS, an interstellar comet with a reddish hue, rich in water ice, and possibly predating the solar system.

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Captured just days after its discovery, the images offer the clearest view yet of this rare visitor from beyond our solar system.

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

Scientists discover 3I/ATLAS, a possible 7-billion-year-old comet from deep space. It may rewrite what we know about the ...