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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 contiguous United States).
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. Explore NASA lunar science here.
Moon — Interactive 3D Lunar Explorer
Explore the Moon in photorealistic 3D with real NASA data, accurate sun lighting, and live lunar phase tracking.
Moon Phase Today: Live Moon Phase Tracker
Track the moon phase today with our interactive moon phase calculator. Get details on the current moon phase and the next full moon phase.
NASA's Daily Moon Guide
Your interactive map for observing the Moon each day of the year, featuring detailed views from NASA's Lunar Reconnaissance Orbiter, plus special Moon events.
2026 Full Moon calendar: When to see the Full Moon and phases
Though a Full Moon only occurs during the exact moment when Earth, Moon, and Sun form a perfect alignment, to our eyes, the Moon seems Full for around three days.
Moon | Features, Phases, Surface, Exploration, & Facts | Britannica
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.
Today's Moon Phase | Current moon cycle for today and tonight
Moon Phase for today and tonight with current lunar phase, illumination percentage and Moons age. Find out what the Moon Phase is on any other day of the year.
Full moon - Wikipedia
There are eight phases of the moon, which vary from partial to full illumination. The moon phases are also called lunar phases. These stages have different names that come from its shape and size at each phase. For example, the crescent moon is 'banana' shaped, and the half-moon is D-shaped.
The moon Coverage | Space
By Stefanie Waldek Published July 2, 2026 The moon that rose on July 4, 1776, was slightly closer to Earth than it is today.
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