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NASA announces unprecedented return of sick ISS astronaut and crew
By Sascha Pare last updated
NASA has announced the early return of Crew-11 from the International Space Station after an unidentified astronaut experienced a medical problem.
NASA telescope combines 100 maps of the universe into one, promising huge discoveries
By Sharmila Kuthunur published
NASA's SPHEREx telescope unveiled its first full-sky map of the universe, combining more than 100 infrared observations into one dazzling mosaic.

Should humans colonize other planets?
By Elise Poore published
As space travel advances, colonization of other planets edges closer to reality. But should we spread to other parts of the galaxy?

'Stop and re-check everything': Scientists discover 26 new bacterial species in NASA's cleanrooms
By Sharmila Kuthunur published
Scientists discover 26 new bacterial species in NASA cleanrooms, revealing surprisingly resilient microbes with potential uses in biotechnology and medicine.

Interstellar comet 3I/ATLAS is rapidly moving away from us. Can we 'intercept' it before it leaves us forever?
By Harry Baker published
3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object.

NASA eyes 3I/ATLAS with alien-hunting Clipper spacecraft in new image
By Brandon Specktor published
NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

James Webb telescope finds supermassive black hole hidden inside 'Jekyll and Hyde' galaxy
By Patrick Pester published
The discovery of a hidden supermassive black hole inside an ancient galaxy suggests that some of our universe's most extreme objects could be invisible unless observed in infrared wavelengths, James Webb telescope observations reveal.

New 3I/ATLAS images show the comet getting active ahead of close encounter with Earth
By Brandon Specktor published
NASA and ESA both shared new images of the interstellar comet 3I/ATLAS this week, as the agencies gear up for the mysterious object's closest approach to Earth on Dec. 19.

Interstellar comet 3I/ATLAS is erupting in 'ice volcanoes', new images suggest
By Patrick Pester published
Scientists have observed cryovolcanoes erupting on comet 3I/ATLAS — giving us a new clue about what's inside it.

Odd-looking rock on Mars is totally alien to the Red Planet, Perseverance rover finds
By Harry Baker published
NASA's Perseverance Mars rover recently came across an odd rock, dubbed "Phippsaksla," that is unlike anything else the robot has found on the Red Planet. It turns out that it probably isn't from our neighboring world and likely crashed on Mars instead.
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