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." ...

We spoke to a genuine astrophysicist about the accuracy of Star Trek's approach to interstellar travel, the holodeck, and the ...

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

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

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.

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

The interstellar comet 3I/ATLAS changed significantly as it flew by the sun last fall, astronomers have discovered.

Christopher Nolan's sci-fi movie Interstellar revitalized cinema set in outer space, but it also inspired this hidden TV gem ...