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 …

Feb 12, 2026 · 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. …

Feb 27, 2026 · 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 …

5 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 …

2 days ago · Current moon phase, including information about its position, illumination, moonrise, and moonset.

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 date.

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 …

5 days ago · 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 Earth, …

5 days ago · Most of North America will witness at least a partial eclipse; Chicagoans are in prime position to catch the total eclipse, when the entire moon falls within the darkest part of Earth’s …