Well, it's July 12, which means (a) the Steam Summer Sale is over and (b) it's really hot outside in the northeastern U.S.

The astronomical community is abuzz over a newly discovered "interstellar object," only the third of its kind ever seen, ...

I/ATLAS isn't just fascinating because it is the third interstellar visitor found in the solar system; new research suggests ...

After defending his PhD thesis on modeling interstellar objects on Monday, June 30, Matthew Hopkins intended to take some ...

When the news started to spread on July 1, 2025, about a new object that was spotted from outside our solar system, only the ...

A mysterious object, first observed hurtling across the solar system on July 1, has now been identified as "very likely to be ...

Astronomers tracking an interstellar object flying through the solar system think it comes from a star at least 8 billion ...

What at first seemed a routine detection of an object travelling through the solar system soon turned out to be anything but.

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I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

The interstellar comet 3I/Atlas is the fastest and largest of its kind, giving astronomers a rare glimpse into extrasolar ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.