Phobos (/ ˈfoʊbəs /) is the innermost and larger of the two natural satellites of Mars, the other being Deimos. The two moons were discovered in 1877 by American astronomer Asaph Hall. Phobos is named after the Greek god of fear and panic, who is the son of Ares (Mars) and twin brother of Deimos.
Phobos is the larger of Mars' two moons and is 17 x 14 x 11 miles (27 by 22 by 18 kilometers) in diameter. It orbits Mars three times a day, and is so close to the planet's surface that in some locations on Mars it cannot always be seen.
Phobos, the inner and larger of Mars ’s two moons. It was discovered telescopically with its companion moon, Deimos, by the American astronomer Asaph Hall in 1877. Phobos is a small irregular rocky object with a crater-scarred, grooved surface.
Phobos v0.4 Release Candidate 1 is now available! A release candidate indicates that no new features or general fixes will be added before the full stable release.
Phobos (pronounced FOH bus) is the largest of the two moons which orbit the planet Mars. It is also closer to it’s primary than any other satellite in the solar system. Phobos travels only 3,700 miles (6,000 km) above the surface of the red planet – by comparison the Moon is 384,400 km above Earth.
In Greek mythology, Phobos was one of the sons of the god of war Ares (Mars to the Romans). The twin sons attended their father in battle. Phobos means fear (as in phobia), while Deimos means...
Phobos (pronounced FOH-buhs) is one of two moons of the planet Mars. Phobos is the larger innermost moon, and is thought to be a rubble pile held together by a dark thin crust. In 30 to 50 million years, it will either collide with Mars or break apart and become a ring system.