One of two small moons orbiting Mars discovered in 1877 by American astronomer Asaph Hall.
In Greek mythology, a son of Ares (Mars) who, with brother Deimos, was a constant companion to his father.
International project PHOBOS was devoted to the investigations of Mars and its satellites. Two interplanetary probes were launched in 1988, one of them had reached the Phobos and carried out some experiments before it was lost.
the larger of the two satellites of Mars
The larger and innermost of the planet Mars' two moons. Phobos was discovered by Asaph Hall on August 17, 1877. In Greek mythology, Phobos was the son of Ares (Mars) and Aphrodite (Venus) and was the personification of "Fear".
Phobos ( or , Greek Φόβος: "Fright"), is the larger and innermost of Mars' two moons (the other being Deimos), and is named after Phobos, son of Ares (Mars) from Greek mythology. Phobos orbits closer to a major planet than any other moon in the solar system, less than 6000 km (3728 miles) above the surface of Mars, and is also one of the smaller known moons in the solar system. Its systematic designation is Mars I.
Phobos (Ancient Greek , "Fear") is the personification of fear and horror in Greek mythology. He is the son of Ares and Aphrodite. He, his brother Deimos, and the goddess Enyo accompany Ares into battle, along with his father's attendants, Trembling, Panic and other abstractions.
Phobos was a heavy ion collision experiment at Brookhaven National Laboratory's RHIC collider. All data is already collected and the experiment is in the data analysis stage as of March 2006. The name is chosen in memory of a previously rejected proposal by the same group called M.A.R.S. as Phobos is one of the moons of Mars.