Moon - Wikipedia
网页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).
Is The Moon A Planet? - Universe Today
网页2015年1月27日 · The answer right now is “yes”. But over time, that barycenter will move outside of Earth. That’s because the Moon is slowly receding from our planet at a rate of about 3.8 centimeters (1.5...
Earth's Moon - Science@NASA
网页2024年9月14日 · Overview. The Moon makes Earth more livable by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years. The Moon rotates exactly once each time it orbits our planet.
Moon Facts - NASA Science
网页The Moon makes a complete orbit around Earth in 27 Earth days and rotates or spins at that same rate, or in that same amount of time. Because Earth is moving as well – rotating on its axis as it orbits the Sun – from our perspective, the Moon appears to orbit us every 29 days.
In Depth | Earth's Moon – NASA Solar System Exploration
网页The brightest and largest object in our night sky, the Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that …
Everything you need to know about the Moon | Astronomy.com
网页2023年9月7日 · 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 kilometers), or about the...
Moons of Our Solar System - Science@NASA
网页Moons of Our Solar System. Moons come in many shapes, sizes, and types. A few have atmospheres and even hidden oceans beneath their surfaces. How Many Moons Are in Our Solar System? Naturally-formed bodies that orbit planets are called moons, or planetary satellites. The best-known planetary satellite is, of course, Earth’s Moon.
Moon | Features, Phases, Surface, Exploration, & Facts | Britannica
网页2 天之前 · 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 Germanic and Old English derivation.
All About the Moon | NASA Space Place – NASA Science for Kids
网页2024年9月27日 · 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 traces its 27-day orbit around our planet.
Moon | Examples & Facts | Britannica
网页2024年8月31日 · Moon, any natural satellite orbiting another body. In the solar system there are 219 moons orbiting the planets. Earth, Mars, Jupiter, Saturn, Uranus, and Neptune have 1, 2, 92, 83, 27, and 14 moons, respectively. Other bodies in the solar system, such as dwarf planets and asteroids, also have moons.