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

Learn more about the interstellar traveler, Comet 3I/ATLAS, and what researchers know about its place of origin.

UFO disclosure has been all the buzz on social media, amid the death or disappearance of at least 12 scientists in the USA ...

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

Astronomers have conducted the first isotopic analysis of an interstellar comet, 3I/ATLAS, revealing it formed in an extremely cold, remote part of the Milky Way. The comet’s water contains deuterium ...

A resurfaced prophecy claims 2026 could mark humanity's first alien contact, with scientists now tracking a mysterious ...

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.

When 3I/ATLAS was first detected, it seemed routine. But as more observations came in, confidence quickly faded. Its behavior ...

Planets may actually form more easily around double stars than around single stars like our sun, according to new research ...

The ion tail appeared as Comet C/2025 R3 PanSTARRS was about 45 million miles from Earth (72 million kilometers) during its ...