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.

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 ...

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

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

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.

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

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

NASA’s Juno spacecraft has directly measured lightning on Jupiter that is significantly more powerful than any recorded on Earth. By tracking radio pulses and matching them to storm locations, ...