New images of the 33-million ton interstellar object confirmed it is releasing a nickel alloy commonly used in the aerospace ...

Astronomers are puzzled by the interstellar comet 3I/ATLAS. It displayed a jet pointing towards the Sun, a behavior never ...

Named 3I/ATLAS and officially designated C/2025 N1 (ATLAS), the sudden appearance of a visitor from another star system ...

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a ...

We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

3I/ATLAS is named for its status as one of three interstellar objects ever discovered in our cosmic neighborhood, as well as ...

Water is the universal yardstick of comet science, the baseline for measuring how sunlight drives a comet's activity and ...

The spacecraft in question are NASA’s Europa Clipper, going to the eponymous icy moon of Jupiter, and the European Space ...

Two spacecraft are on course for 3I/ATLAS, a mysterious interstellar object that some believe could be an alien mothership.

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

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

Harvard professor Avi Loeb discusses the first new images of 3I/ATLAS after it passed Mars. Early photos from international ...