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 …

Mar 18, 2026 · The Moon makes Earth more livable, sets the rhythm of ocean tides, and keeps a record of our solar system's history. Explore NASA lunar science here.

4 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 …

1 day ago · In the first era of moon exploration, NASA and the Soviet Union focused on the near side of the moon, where there was direct radio communication with Earth.

1 day ago · As the Artemis II mission makes its way toward the moon, photos taken by the crew have shifted from highlighting Earth to refocusing on the moon.

1 day ago · NASA has shared the first breathtaking views of Earth taken from the Artemis II mission as the crew continues its journey toward the moon. Subscribe to read this story ad-free Get unlimited …

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 …

1 day ago · Four astronauts are on their third full day in space, preparing to fly by the moon and reach distances in space greater than anyone before them.

May 23, 2023 · Learn how Earth's moon formed, how its orbit affects Earth's tides, why solar and lunar eclipses happen and the history of lunar exploration.

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 …