Ever wonder how deep humans have actually dug into the Earth? From the deepest basement under the Sydney Opera House to the ...

While scouting a remote area, we discovered a tiny hole in the ground that turned out to be the entrance to a massive ...

The record-breaking mission offers an unprecedented opportunity to study the geology of our planet’s largest layer.

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...