Phobos NASA Science
Phobos the Greek god personified fear and was the son of Ares and Aphrodite Mars and Venus respectively The word Phobos is related to the modern word phobia which also means fear Deimos Mars s other moon is also named after a Greek god meaning dread
Phobos is the larger of Mars 39 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 39 s surface that in some locations on Mars it cannot always be seen
Phobos NASA Science
Mars 39 innermost natural satellite Phobos is seen from the planet 39 s surface in this Pathfinder image taken at night on Sol 56 This picture was acquired by NASA 39 s Imager for Mars Pathfinder IMP camera
Facts about Phobos Radius of moon 6 9 miles 11 1 km Semi major axis around Mars distance from planet 39 s center 5 826 miles 9 376 km Closest approach 5 738 miles 9 234 km
Trek is a NASA web based portal for exploration of Phobos This portal showcases data collected by NASA at various landing sites and features an easy to use browsing tool that provides layering and viewing of high resolution data
Martian Moon Phobos NASA Science
Phobos Fact Sheet
Phobos is one of Mars two natural satellites discovered by American astronomer Asaph Hall in 1877 The moon measures approximately 22 kilometers in diameter and is believed to be a captured asteroid composed of carbonaceous chondrite material
Phobos Distance Differences Facts Size Surface
Phobos is the larger of Mars 39 two moons the other being Deimos It was discovered by American astronomer Asaph Hall Sr at the United States Naval Observatory in Washington D C on August 18 1877 These two asteroid size moons are two of the smallest moons in the Solar System
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Mars 39 largest moon Phobos as seen by Mars Reconnaissance Orbiter in 2008 The image was taken from a distance of about 4 200 miles about 6 800 kilometers It is presented in color by combining data from the camera 39 s blue green red and near infrared channels
Phobos is the closest orbiting moon to a planet in our Solar System Phobos has little reflectivity and is one of the least reflective objects in our Solar System Mariner 7 was the first spacecraft to photograph Phobos in 1969
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 and Deimos Compared to the Moon Little Astronomy
Learn about Phobos the largest and closest moon of Mars named for the Greek god of fear Find out how it was discovered what it is made of how it will end and more
Phobos Fact Sheet Image Results
Phobos is one of the two natural satellites belonging to the red planet of Mars Here are eight incredible facts all about the Phobos moon
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
Phobos 1 and its companion spacecraft Phobos 2 were the next generation in the Venera type planetary missions succeeding those last used during the Vega 1 and 2 missions to comet P Halley The objectives of the Phobos missions were to conduct studies of the interplanetary environment perform observations of the Sun
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Phobos Facts About the Doomed Martian Moon Space
Phobos is known for its strange shape that isn t spherical which is one of the reasons it s believed to be an asteroid Japan are going to launch a mission to Phobos in 2024 called the Martian Moon Exploration mission The temperatures on Phobos can range anywhere from 4 c to more than 100 c
Phobos Moon of Mars Solar System GO ASTRONOMY
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Phobos is one of the two moons that orbit the planet Mars It takes its name from the son of Ares literally meaning fear However there is little to fear
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Phobos Fact Sheet
Phobos Trek NASA
Phobos contrary to Deimos and the Moon is moving closer to Mars This means that in 30 50 millions it will collide with the red planet or break up to form a ring like the ones in Saturn Phobos and Deimos are too small to create total solar eclipses like the Moon does on Earth
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Learn about Phobos one of the two moons of Mars and its size orbit features and history Find out how Phobos is different from the Moon and why it may be destroyed by Mars in the future
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Phobos is one of the two moons that orbits Mars It is only 3 700 mi 6 000 km above the surface and this is one of the main reasons that astronomers of the past had a difficult time seeing it The fact is Phobos is actually getting closer to Mars by 6 ft 1 8 m every century