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Moon
Earth’s Moon

The Earth’s Moon is the most important moon in the solar system in regards to Earth and all of the living things within it. It is also the only Moon that Earth has, whereas other planets, like Mars, have multiple Moons. The Moon is the only other Moon that humans have set foot on, which helped us to understand the formation, internal structure, and history of it. The “moon’s face” is the second brightest thing in the solar system after the Sun, and has a dark surface in actuality. The phases of the moon have been important in the lives and cultures of living things on Earth in language, calendars, art, and mythology. The Moon also affects certain parts of Earth, like ocean tides. It appears almost the same size as the Sun, although the Sun is actually way more enormous than the Moon. The formation of the Moon has been proposed to come from 30-50 million years after the origin of the Solar System. It starts with the fission of the Moon, which in turn came from the crust of Earth through centrifugal force. This means since Earth spins, gravity captured a pre-formed Moon into the atmosphere of Earth forming the Earth and Moon together in a primordial accretion disk. However this proposed theory does not include depletion of metallic iron, or high angular momentum of the Earth-Moon system. Another theory is that the Earth-Moon formed after a huge impact in which A Mars-sized object and Earth hit each other and blasted materials into orbit around Earth, which formed the Moon. More recent technology has been able to show us that the Moon particles came from some outside impactor and not from Earth. Moons of other planets have different isotopic compositions of oxygen, whereas Moon and Earth are quite similar. However, recent lunar samples have showed that the Moon and Earth have the same composition, which conflicts the impact theory. Within the Moon, there is a crust, mantle, and core. The inner core has a radius of 240 kilometers,

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