Alfonso Cuarón’s Gravity showed what existential horrors could happen should an astronaut find themselves ... film that follows seasoned deep-sea divers as they battle the raging elements ...

In the 1960s, the U.S. Navy was exploring the other "final frontier" -- the sea. A series of underwater habitats called "Sealabs" were constructed for scientific exploration on the ocean floor.

The Chandrayaan-4 mission, scheduled for launch in 2027, will mark India's first attempt to bring lunar samples back to Earth ...