Astronomers have sighted the oldest known stellar explosion, dating back to when the universe was less than a billion years old

Lime granules trapped in ancient walls show Romans relied on a reactive hot-mix method to making concrete that could now inspire modern engineers

On our 2025 Best Nonfiction of the Year list, Karen Hao’s investigation of artificial intelligence reveals how the AI future is still in our hands

X-ray space telescopes caught a supermassive black hole flinging matter into space at a fifth of the speed of light

As far as annual meteor showers are concerned, 2025 has saved the best for last. This year’s Geminids are not to be missed

Space-based computing offers easy access to solar power but presents its own environmental challenges

A type of chaos found in everything from prime numbers to turbulence can unify a pair of unrelated ideas, revealing a mysterious, deep connection t...

These miniature displays can be the size of your pupil, with as many pixels as you have photoreceptors—opening the way to improved virtual reality

Europe’s climate agency said 2025 is likely to be the second or third hottest on record

The International Committee of the Red Cross warned that artificial intelligence models are making up research papers, journals and archives