Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That ...

The farthest spacecraft from Earth has shut down another instrument in the hopes of buying time for an upgrade that could ...

"Each interstellar comet brings a little bit of its history, its fossils, from elsewhere." ...

NPR's Scott Detrow talks with Regina Barber and Nell Greenfieldboyce about the Artemis moon missions, the "seismic quiet" during a solar eclipse, and the origins of a mysterious interstellar visitor.

CAPE CANAVERAL, Fla. (AP) — The comet that rambled past us from another star last year likely originated in a cold, isolated ...

Two spacecraft called Voyager 1 and Voyager 2 blasted off to investigate Jupiter and Saturn. They’re still gathering data ...

A comet named 3I/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, ...

Research findings are available online in the journal Nature Astronomy. The original story “ Interstellar Comet 3I/ATLAS ...

Interstellar comet 3I/ATLAS is even more extreme. The ratio of semi-heavy water to regular water is 30 times larger than in ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

If you spent too much time watching Toonami in the early 2000s, you are already familiar with Interstella 5555: The 5tory Of The 5ecret 5tar 5ystem. For everyone else, it’s the anime companion film ...