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 …

Apr 29, 2026 · 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.

Nov 5, 2025 · Explore interesting moon facts, from its phases and orbit to tides, eclipses, surface features, and future lunar exploration.

Explore the current phase of the moon, its rise and set times, nightly motion across the sky, and discover lunar features with our interactive map. Stay informed about the celestial movements above.

Track the moon phase today with our interactive moon phase calculator. Get details on the current moon phase and the next full moon phase.

Current moon phase, including information about its position, illumination, moonrise, and moonset.

What is the moon made of, and how did it form? Learn about the moon's violent origins, how its phases shaped the earliest calendars, and how humans first explored Earth's only natural satellite half a …

Find out what phase the moon is in tonight. Real-time moon phase, moonrise and moonset times, illumination percentage, and 7-day lunar calendar for your location.

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...

Real-time moon phase tracker showing moonrise, moonset, altitude, and lunar calendar for any location. Track moon phases, illumination, and position in the sky today.