Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

Priscilla Chan, the billionaire's wife of 13 years, seemed to take it in stride — even as he leapt off the piano, recreating ...

An update to ChatGPT is designed for a better shopping experience inside the chatbot, but still suffers from an old AI ...

NASA's oldest full-time astronaut said that during his most recent trip to the space station, he didn't feel his age at all.