For the past few days, the interstellar comet 3I/ATLAS has been displaying a blue-green gas coma measuring 2.5 arcminutes ...

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. Comet C/2025 R2 (SWAN), or SWAN R2 for short, was discovered on Sept. 12 by ...

Ever since the comet 3I/Atlas was spotted, it has sparked curiosity—not just from astronomers and physicists, but from anyone ...

Pfalzner's models show that interstellar objects — bodies ejected from other star systems — could be captured by these planet ...

The interstellar comet 3I/ATLAS, a rare visitor from outside the Solar System, might have been spewing gases for months ...

Do we know what space actually smells like? And what about other planets, moons, and celestial bodies? Here's what the ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, astronomers detected a strange, fast-moving object racing toward the Sun. Named ...

The earliest images of 3I/ATLAS, newly uncovered by Michigan State University, reveal how the interstellar object evolved as ...

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

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

Perplexity's AI browser Comet. The web is stuck in 2008: billions of tabs, a search box like a slot machine, and whatever “productivity” means this week. Perplexity’s new browser, Comet, is a ...

Although the Perseid meteor shower peaked late Tuesday night into early Wednesday morning, stargazers can still catch a glimpse of the meteors until Aug. 23. The Perseid shower, which has been active ...