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 …

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. …

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 …

What is the current moon phase today? Use the live moon phase calculator at the top of this page to see today's exact phase, illumination percentage, moonrise and moonset times for your location, and …

Find the Moon’s illumination, distance, and latitude for any time on any date. The Moon has four primary and four intermediate lunar phases during a lunar month. Here's all you need to know about …

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 …

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...

Jan 14, 2026 · When the Moon moves around the Earth, and the Earth around the Sun, the Moon periodically changes the appearance of its illumination, which is called the phase of the moon. …

5 days ago · After postponing launch opportunities in February and March, the agency determined that four astronauts could proceed toward the first crewed lunar journey in more than 50 years.

Moon Phases Viroqua. Full moon calendar, new moon, first and last quarter, lunar rise and set, and percentage full.