Nature rarely does straight lines. If you look at a forest, a rock, or a coastline, you see all sorts of shapes and chaos.

Volcanic caves are not just an Earth thing. Scientists have spotted signs of lava tubes on the Moon and Mars. Now, ...

By Will Dunham WASHINGTON, Feb 9 (Reuters) - A fresh examination of radar data for Venus obtained by NASA's Magellan spacecraft in the 1990s indicates the presence of a large underground cavity ...

Researchers had only hypothesized the existence of underground lava tubes on Venus —until now.

Scientists have uncovered evidence of a gigantic empty lava tunnel beneath Venus, revealing a hidden volcanic world on ...

Volcanic activity is not unique to Earth: traces of volcanic activity, such as lava tubes, have been found on Mars and the moon. Now, the University of Trento has demonstrated the existence of an ...

On Mars or the Moon, researchers use high-resolution optical cameras to spot “skylights,” which are essentially holes in the ...

Scientists analyzing NASA’s Magellan radar data have discovered a massive underground lava tube on Venus, revealing new clues about the planet’s volcanic past.