The probe launched almost 50 years ago and is the farthest human-made object from Earth. Shutting down one of its scientific ...

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

The comet that rambled past us from another star last year likely originated in a cold, isolated corner of the galaxy that ...

The water coming off comet 3I/ATLAS is not just unusual. It is extreme. Astronomers studying the interstellar comet found ...

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

Giant “interstellar glaciers” of water ice have been mapped across the Milky Way by NASA’s SPHEREx telescope, possibly laying ...

NASA's SPHEREx space telescope reveals widespread water ice in Cygnus X, showing how dust shields molecules in star-forming ...

New observations of the interstellar comet 3I/ATLAS include the first measurement of the abundance of deuterated water ...

University of Michigan astronomers have found that the interstellar comet 3I/ATLAS contains 30 times more "heavy water" ...

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