The structures of two ancient civilizations and wooden remains poking from sand dunes are among the latest archaeological finds around the world.

Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes ...

Astronomers have captured the most detailed infrared images yet of an active galactic nucleus (AGN), using the Large ...

Kentucky cave explorer Floyd Collins went underground—and didn’t come out. The epic effort to rescue him gripped national ...