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 …

Sep 17, 2025 · Like Earth, the Moon has a day side and a night side, which change as the Moon rotates. The Sun always illuminates half of the Moon while the other half remains dark.

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?

1 day ago · Discover the moon like never before! Interactive moon phases, 3D moon exploration, moon landing history, and lunar calendar designed for children. Learn about the moon through NASA …

Nov 5, 2025 · With our 2025 Moon Phase Calendar, you'll find the current Moon phase for tonight—plus, all the phases of the Moon for each day of the month.

We see the full moon when the sun is directly behind us, illuminating a full hemisphere of the moon when it is directly in front of us.

18 hours ago · Moon, or Luna in Latin, is planet Earth’s one and only natural satellite and the brightest object in the night sky. With a diameter of 2,159.2 miles (or 3,474 km), it is roughly the size of the …

Nov 12, 2025 · Today's lunar phases, including the moon age and details such as moonrise and moonset. Discover when the moon will reach the full moon phase with a countdown timer.

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...