Phobos (moon) - Wikipedia
Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi). It orbits 6,000 km (3,700 mi) from the Martian surface, closer to its primary body than any other known natural satellite to a planet. It orbits Mars much faster than Mars rotates and completes an orbit in just 7 hours and 39 minutes.
Phobos - NASA Science
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: Facts About the Doomed Martian Moon | Space
2017年12月8日 · Phobos means fear (as in phobia), while Deimos means flight (especially in the sense of fleeing after a defeat), according to NASA. NASA's Mars rover Curiosity snapped this photo of the larger...
Phobos | Orbit & Surface Features | Britannica
2024年11月6日 · Phobos, the inner and larger of the two moons of Mars, in a composite of photographs taken by the Viking 1 orbiter in October 1978 from a distance of about 600 km (370 miles). The most prominent feature is the impact crater Stickney, which is …
Phobos Moon Facts - Space Facts
Phobos is one of the two moons of Mars. It is the larger of the two moons, and is heavily cratered and appears to have grooves and streaks of material along its sides. Phobos size compared to the Moon. Phobos’s orbit is so fast it would appear to an observer on the planet to rise in the west and set in the East twice each Martian day.
Phobos (moon) - Simple English Wikipedia, the free encyclopedia
Phobos is the larger of the two moons, and is only 27 kilometers in diameter. This is about as far as a car can travel on the highway in 15 minutes. It is covered with craters, as Earth 's moon is. [7] It is named after the god Phobos in Greek mythology. Its name means "fear".
Phobos: Distance, Differences, Facts, Size, Surface
2024年8月26日 · What is Phobos moon? Phobos is one of the two natural satellites of Mars, discovered by American astronomer Asaph Hall in 1877. Phobos measures approximately 22 kilometers (14 miles) in diameter, making it larger than its companion moon Deimos.
Phobos: Facts about Mars' Moon, Phobos - The Planets
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 …
Mars’ Moon Phobos is Slowly Falling Apart - NASA
2015年11月10日 · The long, shallow grooves lining the surface of Phobos are likely early signs of the structural failure that will ultimately destroy this moon of Mars. Orbiting a mere 3,700 miles (6,000 kilometers) above the surface of Mars, Phobos is closer to its planet than any other moon in the solar system.
Phobos (moon) facts for kids - Kids encyclopedia
2008年3月23日 · Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi) and is seven times as massive as the outer moon, Deimos. Phobos is named after the Greek god Phobos , a son of Ares (Mars) and Aphrodite (Venus) and the personification of horror ( phobia ).