Comet 3I/ATLAS explained in plain English: What is it, why is it making headlines, and is it really an alien probe? Here is the science (and the fun facts) behind the interstellar visitor everyone is talking about.

A rare and powerful tsunami shook the Pacific, sending massive waves crashing into coastal towns. Learn what caused it, why warnings came so fast, and how these ocean monsters form—and what it means for future risks.

A warning that came from the wall, not the sky It was May 25, 1955. It was a warm spring evening in Udall, Kansas, the kind of town where...

A frozen spot on the map holds one of Earth’s strangest time tricks If you glance at a world map, you might miss them, two tiny islands...

NASA astronaut Butch Wilmore , left, Roscosmos cosmonaut Aleksandr Gorbunov, second from left, and NASA astronauts Nick Hague , second...