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 …

Dec 20, 2025 · 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 …

Dec 17, 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. …

Dec 15, 2025 · Research shows a full moon can modestly affect sleep, but its influence on mental health is much less certain.

2 days ago · The moon and sun share top billing in 2026. Kicking off the year's cosmic wonders is the moon, drawing the first astronauts to visit in more than 50 years.

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.

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 …

23 hours ago · What is today’s moon phase? As of Tuesday, Dec. 30, the moon phase is Waxing Gibbous. According to NASA's Daily Moon Observation, 79% of the moon will be lit up tonight.

1 day ago · Everything you need to know about January’s full Wolf Supermoon — including exactly when it’s full and the best evening to see it rise in dramatic twilight.

Nov 21, 2025 · Tonight in Douglass, the moon is in the Waxing Crescent phase with about 1% illumination. The next moon phases after tonight are: First quarter on November 28, 2025, Waxing …