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In geophysical terms, the Moon is a planetary-mass object or satellite planet. Its mass is 1.2% that of the Earth, and its diameter is 3,474 km (2,159 mi), roughly one-quarter of Earth's (about as wide as the United States from coast to coast).
The Moon is a differentiated world with a dense core, a mantle, and a crust. Learn how the Moon's layers formed from a magma ocean and how they affect its surface features and terrain.
16 Ιουν 2021 · The moon is made of rock, with a thin crust, a thick lithosphere and a small iron core. Learn how the moon's surface features, such as volcanoes, craters and lava flows, reveal its history and formation.
3 Οκτ 2019 · The moon has a similar structure to the Earth, with a crust, mantle, and core, but the inner layers are unknown. The crust is made of rocks and dust, the mantle of olivine and other minerals, and the core of iron and sulfur. The moon also has a thin atmosphere of gases.
Learn about the Moon's core, mantle, crust, surface, and history from NASA. The Moon is made of rocky materials like oxygen, silicon, magnesium, iron, and more.
7 Σεπ 2023 · Learn about the Moon's outer layer, mantle, core, and surface features, as well as its average and variable distance from Earth. Find out how the Moon's phases are caused by the changing orbital geometry of the Sun, Moon, and Earth.
Composition and origins of the Moon. Since the dawn of civilisation, we have always wondered where the Moon came from. But until we finally managed to visit it in 1969, its origins remained a complete mystery to science. The Apollo landings changed all that.
