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 1, 2026 · 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 …

Jan 23, 2026 · Your interactive map for observing the Moon each day of the year, featuring detailed views from NASA's Lunar Reconnaissance Orbiter, plus special Moon events.

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 each …

Jul 16, 2004 · 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.

The moon is the Earth's only natural satellite and the closest celestial object. Learn about the moon and some of the theories about the moon's origin.

View the current moon phase in your time zone, with a beautiful backdrop of stars! Check this page anytime to view what the moon looks like right now.

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 …

This data service provides rise, set, and transit times for the Sun and Moon, civil twilight beginning and end times , and lunar phase information for any year between 1700 and 2100. First,...

3 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 …