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 ...

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.

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, ...