NASA has identified an interstellar comet, named 3I/ATLAS, hurtling towards us at 200,000 km/h. It should be visible by telescopes through September and reappear in December.

Was it a cosmic jellyfish, a fleeting light trick, or something more outlandish? When NASA astronaut Nichole Ayers took a ...

How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

Europa Clipper is NASA’s bold mission to investigate whether Jupiter’s moon Europa could harbor life beneath its frozen ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...

CAPE CANAVERAL, Fla. (AP) — Astronomers say they've spotted an object in our solar system that's believed to be from another ...

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

I’ve spent much of my long life studying — and trying to understand — the history of the universe. Along the way, I have been constantly reminded that science is essentially international: Science ...