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 contiguous United States). The Moon makes Earth more livable, sets the rhythm of ocean tides, and keeps a record of our solar system's history.

Context Explanation

Explore NASA lunar science here. 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 percentages and the Moon's age. Track the moon phase today with our interactive moon phase calculator.

Insight Material

Get details on the current moon phase and the next full moon date. Artemis II’s New Views of the Moon - The New York Times Learn about Moon phases and see our Moon Phase Calendar here. Enter your location to find your local moonrise and moonset ... 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.

Final Conclusion

The Moon’s diameter is approximately 2,160 miles (3,475... 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.