A squad of robots will explore off-planet caves to help set up homes for humans, according to new research. The robo-teams would work together to rope down into lava holes to map out potential ...

We don't know much about the moon's subsurface environment, but the same was true of the moon's surface in the past. To explore these unseen depths, the European Space Agency is evaluating a spherical ...

In the not-too-distant future, the search for signs of life on Mars and the moon could see the next generation of robots exploring a new frontier: subsurface lava tubes. These missions could also help ...

While the vast majority of our nation’s natural wonders exist above ground, a select few parks, forests, and national monuments feature a hidden basement level. Mammoth Cave National Park, for example ...