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  1. Moon - Wikipedia

    The Moon is the only natural satellite of Earth. It orbits around Earth at an average distance of 384,399 kilometers (238,854 mi), [f] a distance roughly 30 times the width of Earth. It completes an orbit …

  2. Earth's Moon - Science@NASA

    Jul 13, 2026 · Like Earth, the Moon has a day side and a night side, which change as the Moon spins through space. The Sun always illuminates half of the Moon while the other half remains dark.

  3. All About the Moon | NASA Space Place – NASA Science for Kids

    May 18, 2026 · Earth has just one moon – a rocky, cratered place, roughly a quarter the size of Earth and an average of 238,855 miles away. The Moon can be seen with the naked eye most nights as it …

  4. Moon | Features, Phases, Surface, Exploration, & Facts | Britannica

    1 day ago · Moon, Earth’s sole natural satellite and nearest celestial body. Known since prehistoric times, it is the brightest object in the sky after the Sun. Its name in English, like that of Earth, is of …

  5. What’s the Definition of a ‘Moon’? | Scientific American

    Mar 21, 2025 · As with so many questions in science, it may seem straightforward but truly isn’t. “Why, a moon is a celestial body that orbits a planet,” you’re probably thinking. Well, sure—if you squint your...

  6. Moon Facts - NASA Science

    Feb 12, 2026 · The Earth and Moon are tidally locked. Their rotations are so in sync we only see one side of the Moon. Humans didn't see the lunar far side until a Soviet spacecraft flew past in 1959. …

  7. Everything you need to know about the Moon | Astronomy.com

    Sep 7, 2023 · How big is the Moon? The Moon is Earth’s only permanent natural satellite, and it’s the fifth-largest satellite in our solar system. The Moon’s diameter is approximately 2,160 miles (3,475...

  8. Moon - Simple English Wikipedia, the free encyclopedia

    The Moon, also known as Luna, is Earth 's only natural satellite (the only object which orbits the Earth and is not man-made). It is usually visible in the night sky, but is sometimes seen during the day.

  9. MOON Definition & Meaning - Merriam-Webster

    5 days ago · The meaning of MOON is the earth's natural satellite that shines by the sun's reflected light, revolves about the earth from west to east in about 29½ days with reference to the sun or about 27⅓ …

  10. Moon | Examples & Facts | Britannica

    May 25, 2026 · A moon is any natural satellite orbiting another body. In the solar system there are 416 moons orbiting the planets.