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 …

May 21, 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.

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

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 …

New Moon and Full Moon calendar with precise times and simulation of the Moon phase today. When is the next Full Moon?

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.

2 days ago · 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 …

Sep 16, 2025 · The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space …

Jun 3, 2026 · NASA will give an update on Tuesday afternoon (May 26) about its plans to build a moon base, and you can watch it live. An international team of researchers say they've found a more …

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