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).
Moon | Features, Phases, Surface, Exploration, & Facts
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.
Earth's Moon - Science@NASA
网页Earth's Moon is 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 Facts - NASA Science
网页Facts. Top Questions. Moon Facts. 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. 10 things.
All About the Moon | NASA Space Place – NASA Science for Kids
网页4 天之前 · 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 Phases - NASA Science
网页The Moon is opposite the Sun, as viewed from Earth, revealing the Moon’s dayside. A full moon rises around sunset and sets around sunrise. The Moon will appear full for a couple of days before it moves into…
Overview | Phases, Eclipses & Supermoons – Moon: NASA Science
网页From your astronaut’s viewpoint, you can see that the Moon is an average of 238,855 miles (384,399 km) from Earth, or about the space that could be occupied by 30 Earths. It travels around our planet once every 27.322 days in an elliptical orbit, an elongated circle.
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...
Moon Interactives - NASA Science
网页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. Visit the Daily Moon Guide.
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 …