Moon - Wikipedia
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).
Earth's Moon - Science@NASA
The Moon makes Earth more livable, sets the rhythm of ocean tides, and keeps a record of our solar system's history.
Moon Facts - NASA Science
As the Moon orbits Earth, different parts are in sunlight or darkness at different times. The changing illumination is why, from our perspective, the Moon goes through phases. During a "full moon," the hemisphere of the Moon we can see from Earth is fully illuminated by the Sun.
Moon | Features, Phases, Surface, Exploration, & Facts | Britannica
2 days 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 Germanic and Old English derivation.
In Depth | Earth's Moon – NASA Solar System Exploration
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 has guided humans for thousands of years.
Moon | Glenn Research Center | NASA
Nov 22, 2023 · The Moon completes an orbit of the Earth every 27.3 days (approximately 655 hours). The Moon also rotates on its axis. Because of tidal forces, it completes one revolution every 655 hours.
All About the Moon | NASA Space Place – NASA Science for Kids
Jan 2, 2025 · 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 Interactives - NASA Science
NASA’s interactive map for observing the Moon each day of the year. Find key sites and landmarks, check out special Moon events throughout the year, and more. Visualize, explore, and analyze the lunar surface using real data returned from a growing fleet of spacecraft.
The moon — A complete guide to Earth's companion | Space
May 23, 2023 · Learn how Earth's moon formed, how its orbit affects Earth's tides, why solar and lunar eclipses happen and the history of lunar exploration.
Everything you need to know about the Moon | Astronomy.com
Sep 7, 2023 · The Moon is Earth’s only permanent natural satellite, and it’s the fifth-largest satellite in our solar system.