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 …
Earth's Moon - Science@NASA
Dec 29, 2025 · Like Earth, the Moon has a day side and a night side, which change as the Moon rotates. The Sun always illuminates half of the Moon while the other half remains dark.
Moon Phases Calendar: What's the Moon Phase Today?
Jan 3, 2026 · Use our Moon Phase Calendar to find dates and times of the full Moon, new Moon, and every phase in between. Beyond the phases of the Moon, you will also see daily Moon illumination …
Moon - National Geographic Society
Dec 5, 2024 · A moon is an object that orbits a planet or something else that is not a star. Besides planets, moons can circle dwarf planets, large asteroids, and other bodies. Objects that orbit other …
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...
Moon | Features, Phases, Surface, Exploration, & Facts | Britannica
5 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 …
NASA rolls moon rocket onto launch pad in preparation for astronauts ...
2 days ago · The rollout sets the stage for tests and dress rehearsals ahead of NASA's first crewed flight to the moon in more than 50 years. The mission could launch in three weeks.
Daily Moon Guide | Observe – Moon: NASA Science
NASA's interactive map for observing the Moon each day of the year.
How the Moon Works - HowStuffWorks
The moon is the Earth's only natural satellite and the closest celestial object. Learn about the moon and some of the theories about the moon's origin.
Artemis II Moon Mission: NASA Completes Giant Rocket’s Slow Ride to ...
2 days ago · The Space Launch System and Orion capsule were transported to the launchpad before an astronaut mission that could launch as soon as Feb. 6.