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 …

Jun 25, 2025 · 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. …

4 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 …

Sep 7, 2023 · The Moon is about one-fourth the size of Earth. It's primarily composed of rock and minerals, with a small iron core. The Moon's average distance from Earth is roughly 239,000 miles. …

Nov 5, 2025 · With our 2025 Moon Phase Calendar, you'll find the current Moon phase for tonight—plus, all the phases of the Moon for each day of the month.

4 days ago · The "dark side of the moon" refers to its far side, unseen from Earth. Currently, a crescent moon glows with Earthshine—sunlight reflected from Earth.

NASA's interactive map for observing the Moon each day of the year.

5 days ago · If you know any bit of information about how the moon was created, new research indicates that everyone has believed wrong about where the moon came from.

A lunar phase or Moon phase is the apparent shape of the Moon 's day and night phases of the lunar day as viewed from afar. Because the Moon is tidally locked to Earth, the cycle of phases takes one …

Nov 12, 2025 · Find planets, stars, and constellations in your night sky. See the Moon's position in its orbit around Earth in real-time as well as past and future Moon phases, illumination, distance from …