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⇱ Moons

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Moons of Our Solar System

Naturally-formed bodies that orbit planets are called moons, or planetary satellites. Moons come in many shapes, sizes, and types. There are hundreds of moons in our solar system.

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featured moons

Moons of Mars

Mars has two small moons - Phobos and Deimos.

Moons of Jupiter

Dozens of moons swarm around this giant world.

Moons of Saturn

Saturn has more moons than any other planet.

Explore Our Solar System's Moons

Our solar system has hundreds of known moons orbiting planets and dwarf planets. Even some asteroids have moons.

Moons – also called natural satellites – come in many shapes, sizes and types. They are generally solid bodies, and a few have atmospheres.

👁 a trio of ravioli-shaped small moons of Saturn.
This montage of views from NASA's Cassini spacecraft shows three of Saturn's small ring moons: Atlas, Daphnis and Pan at the same scale for ease of comparison.
NASA/JPL-Caltech/Space Science Institute

Earth's Moon

  • All About Our Moon

    From lighting up our skies to maintaining a geological record of our solar system’s history, Earth’s closest celestial neighbor plays a pivotal role in the study of our planet and our solar system. 

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  • It's Just a Phase

    Sometimes the entire face of the Moon glows brightly. Other times we see only a thin crescent of light. Sometimes the Moon seems to disappear. These shifts are called moon phases.

    Learn the Moon's Phases

👁 Moon North Pole
Moon North Pole

News About Moons

3 Min Read

NASA Moon Observing Instrument to Get Another Shot at Lunar Ops

Article
2 Min Read

NASA’s Dust Shield Successfully Repels Lunar Regolith on Moon

Image Article
6 Min Read

How NASA’s Lunar Trailblazer Could Decipher the Moon’s Icy Secrets

Article
for students

Moons in Our Solar System

How big is Ganymede? How small is Deimos? Which moons might have what it takes to support life?

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👁 The four largest moons of Jupiter ranging in color from yellowish brown to dark gray.
Jupiter's largest moons, from left to right: Io, Europa, Ganymede, Callisto.
Credit: NASA

Moons in our Solar System

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More Resources

JPL Solar System Dynamics

SSD provides information related to the orbits, physical characteristics, and discovery circumstances for most known natural bodies in our solar system.

Carnegie Science

Astronomer Scott S. Sheppard's Planetary Moon Database