Phobos: A decaying moon of Mars

 : Phobos: A decaying moon of Mars 

Phobos is a large moon of the two natural satellites of Mars, the other being the Martian moon Deimos. Phobos is a Greek word, meaning "fear". It is also the name of the god of terror in ancient Greece. These two moons of Mars were discovered in 1877 by astronomer Asaph Hall. Phobos is 17x14x11 miles (27x22x18 km) in diameter. It orbits Mars three times a day, and is so close to the planet's surface that it cannot always be seen in some places on Mars.

 . Orbital characteristics of Phobos

 Orbital period: Seven hours and 39 minutes, this period is much faster than Mars itself orbits the Sun. Average distance from Mars: 6000 km (3730 mi) Phobos Orbit: 0.0015 A nearly spherical orbit  Physical and Physical Characteristics of Phobos Shape of Phobos: Irregular (see post image) and roughly oval in shape Dimensions: 17x14x11 miles (27x22x18 km) Total Surface Area: 1,555 km² (601 miles²) Composition: Carbonaceous chondrite (a type of asteroid material), i.e. a body containing rocky material. [9/17, 11:05 AM] Hadi Bangash: Some interesting facts about Phobos Like our Earth's moon, this Martian moon is tidally locked, meaning its face always faces Mars on the same side, until it completes one orbit around Mars. Orbital Decay: Because Phobos is tidally locked, Phobos' orbit is slowly decaying, and it will eventually collide with Mars or lose its orbit around Mars.

: . Unique origin: 

Phobos is thought to be a stray asteroid rather than a moon formed from its own material, which once passed very close to Mars, and is still orbiting Mars due to the gravitational pull of Mars. is putting Phobos has been closely examined by several spacecraft, including NASA's Viking mission, the Mars Global Surveyor, and the European Space Agency's Mars Express.

: Future missions, 

such as the Russian Phobos-Grunt mission, are planned to explore Phobos in more detail. Phobos is approaching Mars about 2 cm per year, and it is predicted that 30 to 50 Within a million years it will either collide with a planet or break up in the planetary ring. When this collision occurs, it will be one of the most violent and dangerous impacts ever on the Red Planet. Alternatively, it could break into a few million pieces, spreading the ring around Mars.

: A color image of Phobos shows that the material around the giant crater Stickney (on the left side of the moon) appears gray while the rest of the moon appears reddish. The gray material is likely fresh material, which appeared on this moon in the recent past.

: Think twice before you jump off the surface of Phobos, because there's a chance you could land back on the surface of Phobos again. Your jump will be 773 meters high on Phobos. This is due to the weak gravity found on Phobos. The gravitational force of Phobos is 1/1000th that of Earth. The gravitational acceleration of Phobos is 0.0057 m/s². A 150-pound (68 kg) person would weigh two ounces (68 grams) there

 Nevertheless, NASA's Mars Global Surveyor has shown evidence of landslides, and rocks and soil that have fallen back onto the moon's surface after being blasted away by meteorites. The maximum temperature of Phobos has been measured at 25 degrees Fahrenheit (-4 degrees Celsius) and the minimum at minus 170 degrees Fahrenheit (-112 degrees Celsius). This extreme heat loss is likely the result of fine dust on the surface of Phobos.

., which is unable to maintain a uniform temperature. Water is not found on the surface of this moon of Mars. Oxygen is also absent on Phobos, but certain gases such as nitrogen, carbon dioxide and small amounts of methane are present.