Moons

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A beautiful image of the Moon taken by the Galileo spacecraft on December 7, 1992. It shows a partially lit Moon with mild red and green color.

Earth's Moon

The Moon makes Earth more livable by moderating its wobble.

Mars with its two moons

Moons of Mars

Mars has two small moons - Phobos and Deimos.

Jupiter and Galilean Moons

Moons of Jupiter

Dozens of moons swarm around this giant world.

Moons of Saturn

Saturn has 146 moons, more than any other planet.

Image of blue Uranus, with three purple marks in it. Surrounding Uranus is a ring.

Moons of Uranus

Uranus moons are named for great literature.

This distant view of Neptune shows the planet as small, shiny orb surrounded by faint rings with stars and galaxies in the background.

Moons of Neptune

Neptune has 16 known moons.

A composite image with Pluto's moon, Charon behind Pluto. Both worlds appear reddish with tan features in this enhanced color image.

Moons of Pluto

Pluto has five moons.

Latest News

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Explore Our Solar System's Moons

Our solar system has hundreds of moons. 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

Get Ready for the March 2025 Total Lunar Eclipse

The Moon will pass into Earth’s shadow and appear to turn red on the night of March 13 or early in the morning on March 14, depending on time zone. Here’s what you need to know about the total lunar eclipse.

What You Need to Know
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.

Explore
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

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?

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

NASA Science Missions

Europa Clipper

Europa Clipper will search for signs of potential habitability on Jupiter's icy ocean moon Europa.

Moons in our Solar System

11 Images

More Resources

Results from NASA NEOWISE survey find that more potentially hazardous asteroids, or PHAs, are closely aligned with the plane of our solar system than previous models suggested.

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.

This is an artist concept of Kuiper Belt object 2003 UB313 nicknamed Xena and its satellite Gabrielle. Xena is the large object at the bottom of this artist concept.

IAU

International Astronomical Union (IAU) Planet and Satellite Names and Discoverers

An image of the full moon

Carnegie Science

Astronomer Scott S. Sheppard's Planetary Moon Database

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