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Europa (Jupiter) 0 Galileo Galilei and Simon Marius discovered Europa moon on January 8th 1610. The meaning behind the name of Europa is “wide face”. Europa is named after the beautiful Phoenician princess who, according to Greek mythology. Europa moon is the sixth closest moon of the planet Jupiter. This moon has soft and smooth surface. It has oxygen on its surface. It is 483 million miles away from the sun that’s why it is very cold and freezing there. It has an average temperature of -160 degrees Celsius; at the equator it is even colder -220 degrees Celsius. Its mass is 4.8e+22. There is frozen sulfuric on its surface. The surface of the moon is frozen solid and brightest in the solar system but it is very rocky underneath. It rotates 3 and half days and also orbit in 3 and half days. IO moon (Jupiter) 0 Io moon was first discovered by Galileo four hundred years ago, in 1610. Io moon is the third biggest moons of Jupiter. Io moon has a diameter of about 2262 miles (3643 kilometers) and is made of rock. Io orbits Jupiter at a distance of about 262,094 miles ( 421,800 kilometers) from the planet. Io orbits round Jupiter at a speed of 38,764 miles (62,423 kilometers) per hour which is faster than the other moons. Io travels 1645,796 miles (2650,236 kilometers) in the orbit and takes only 1.7 of our earth days to complete a single orbit. Io is so close to Jupiter. Io, in Greek mythology, was a princess of Argos. The radiation in Io was so strong. Io was covered with giant volcanoes which erupt with extreme frequency. These volcanoes spurt out large amounts of sulfuric acid into the air which falls, causing the beautiful reds, yellow and oranges of Io'd appearance. Earth’s moon 0 Earth’s moon is the fifth largest moon in the solar system. This moon is 4.5 million years. The moon is ¼ size of the Earth. It has many things such as craters, lava plains, mountains and valleys. Craters were formed around 3.5 to 4.5 billion years ago caused by meteor hitting the surface of the moon. The distance from the moon to our planet is around 384403 kilometres (238857 miles). The moon orbit about 27.3 days. It orbits about 2,300 miles per hour. The moon’s temperature is around 123C to 223C. If a man weighs 82 kg in Earth he could only weigh 30 at the moon. Deimos (Mars) 0 Deimos was discovered by Asaph Hall in 1817. The meaning of its name is panic. This moon is one of the smallest moons in the solar system; it is only 12.6 km (7.8 miles). Most people think that Deimos and Phobos are asteroids’ because their irregular shape and small size. Having small size causes lack of gravity. Because of having lack gravity, they don’t have enough force to pull themselves into a round shape. Deimos is much far from Phobos. It is very far from Mars, it looks like star in the sky most of the time. From some places in Mars you cannot see Deimos at all. The length of year in Deimos is 1.2 days. Phobos (Mars) 0 Phobos moon was first discovered by A.Hall, which has been discovered on 1877. Phobos means fear. They are small rocks left over from the birth of the planets. Phobos is 27 km across at its widest point and has a large impact crater on one side. It flies around mars three times in one Martian day. Phobos may once have been asteroids that orbited the sun between mars and jupiter. The mass of Phobos was for about 1.063 x 1019 g. The orbit was 1.075 degrees. Phobos has no atmosphere. Phobos orbits closer to Mars. The temperature in Phobos is -4C. In Phobos the gravity was strange because it wasn't like a normal planet or moon. Iapetus (Saturn) 0 Cassini discovered Iapetus in 1671. The meaning of its name was the son of Uranus. It is the third-largest moon in the planet Saturn. Iapetus has one side much darker than the other side. Iapetus is 1440 km, or 960 miles long. The temperature on its surface is -226 F0. Iapetus orbits every 79 days. The distance from this moon to Saturn is 3,561,300 km. Phoeboe (Saturn) 0 Phobos moon was first discovered by A.Hall, which has been discovered on 1877. Phobos means fear. They are small rocks left over from the birth of the planets. Phobos is 27 km across at its widest point and has a large impact crater on one side. It flies around mars three times in one Martian day. Phobos may once have been asteroids that orbited the sun between mars and jupiter. The mass of Phobos was for about 1.063 x 1019 g. The orbit was 1.075 degrees. Phobos has no atmosphere. Phobos orbits closer to Mars. The temperature in Phobos is -4C. In Phobos the gravity was strange because it wasn't like a normal planet or moon. Miranda (Uranus) 0 Miranda is the smallest moon in Uranus planet. Miranda was named after the daughter of the magician Prospero in Shakespeare's play The Tempest. This moon is made of half rocky and half ice. In one place Miranda has a cliff that is 5 km high. Gerard Kuiper discovered this moon on February 16th 1948. Its surface area is 700 000 km2. The distance from Uranus is 129,780 km. If you weigh 51 on Earth you will weigh 500 newtons. Newtons is only used for special purposes, when we really want to know how hard we push on something because gravity is pulling on us. If that weight is in pounds divide it by 28 to get newtons. Juliet (Uranus) 0 Juliet is one of the anus moon. It is one of the small, inner moons of Uranus. Its surface consists of the dark unprocessed, carbon rich material found on the c-class of asteroids. Juliet was discovered on 3 january 1986. it was first discovered by Voyager science team. The gravity in Juliet was 0.017m/s2. The mass in Juliet was 557,564kg. The distance between Uranus and Juliet was 64,360. the magnitude there was 21,5. the diameter in Juliet was 84. and the orbital period was for 0.493. The named of “Juliet” was from the play of William Shakespeare called “Romeo & Juliet”. Moons of Uranus are named for characters in shakespeare play and from Alexander Pope's “Rape and Lock” Larissa (Neptune) 0 On May 1981, Harold J. Reitsma, William B.Hubard, Larry A. Lebofsky and David J. Tholen discovered Larissa. The meaning of Larissa in Greek mythology is a love of Poseidon and eponymous nymph of the city in Thessaly. The distance from Larissa to Neptune is 73,600 km. This moon is the fourth largest in Neptune. The weight is around 0.05 kg. This moon orbits every 13 hours and 20 minutes. Thalassa (Neptune) 0 Thalassa, like Naiad, most likely formed from fragments of Neptune's original moons, which were smashed by the disturbances caused when the ice giant Neptune captured Triton. Thalassa is unusual for an irregular moon because it is roughly disk-shaped. Thalassa was named after a daughter of Aether and Hemera from Greek mythology. Thalassa is also the Greek word for sea. Thalassa was first discovered by Voyager in August 1989. the volume of Thalassa is 288,696 km3. The mass is 374,667,108,274,298,00 kg. The length of the orbit is for about 0,311 earth days. The surface gravity is 0.015 m/s2. 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