I'm a severe claustrophobe. After getting trapped in a slide in my local McDonald's at five years old, I swore off all tight and dark spaces forever. So it's not entirely surprising that I couldn't ...

Chinese astronauts, known as taikonauts, were sent into a large limestone cave system in a remote area of China.

Exploring a cave is never a disappointing experience. Every craggy wall tells a story, every gloop of muddy moss tells a tale of the past, every window of light illustrates how nature is a great ...

China's first astronaut cave-training mission has been completed in its southwestern Chongqing Municipality, with 28 ...

On this episode, we hear how a team of researchers at the University of Northern Iowa is exploring the deepest caves in the U.S. with NASA funding. This could inform the search for life on other ...

Fresh orbital images and new geological analysis have revealed eight mysterious caves on Mars that appear unusually well suited to protect traces of life. Together, these caverns, portals and ...