In the middle of the South Pacific, a thousand feet below the surface of the water, an alien spacecraft is discovered by the U.S. Navy. The thickness of coral growth on it suggests that it has been there for a few hundred years. A team made up of a marine biologist, a mathematician, an astrophysicist, a psychologist and a member of the U.S. Navy is tasked with investigating the spaceship. The team are housed in a state-of-the-art underwater living environment called the Habitat during their stay on the ocean floor.
Upon entering the spaceship, the team makes two discoveries. The first is that the ship is American, and was in service in the future, gathering objects from around the galaxy to bring back to Earth, until an "Unknown (Entry) Event" takes place. However the exact year from when the apparently American spaceship came from cannot be verified. This is due to the date format which only indicates the last two digits of the year, 06/21/43, which could indicate an infinite possible time from the future. Harry then concludes that the ship has travelled 50 years back from the future: 2043.
The second find is a large perfect sphere held inside the ship which has very unusual properties.
Based on information gleaned from the ship's log, Ted hypothesizes that the unknown event in the ship's log was the ship's entry into a black hole, which propelled it several hundred years backwards through time.
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Película sobre las profundidades marinas, tipo Abyss (1989).
