Historians and divers are trying to retrieve prehistoric clues from beneath the waves—but they have to act fast.
Europa’s buried ocean has made it one of the most exciting places to search for life beyond Earth. However, new calculations suggest its seafloor may be calm, cold, and largely inactive, with little ...
A 2016 astronaut photo of the Bahamas shows a series of luminous, rippling sandbanks partly carved out by a coral reef. The ...