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Our Glaciers: Then and Now activity kit helps you see the changes taking place in glaciers around the world. See all our activity kits and classroom activities.
Saturn's one large moon, Titan, and several of the ringed planet's medium-sized moons. Earth's Moon is also shown for size comparison.
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Original Windows to the Universe artwork by Randy Russell using images courtesy NASA.

Large and Medium-sized Moons of Saturn

Saturn has moons. Many of those are tiny chunks of rock or ice only a few kilometers (miles) across. One of Saturn's moons, Titan, is much larger than the rest and is amongst the largest moons in our entire Solar System.

Midway in size between Titan and the many tiny moonlets are several medium-sized moons. The image on this page shows Titan and the mid-sized moons of Saturn. They are, in order from largest to smallest: Rhea, Iapetus, Dione, Tethys, Enceladus, Mimas and Hyperion. Two more moons, Phoebe and Janus, are visible in the larger version of this image (click on the small image on this page to see the larger image). The picture also shows Earth's Moon for size comparison.

Last modified June 7, 2004 by Randy Russell.

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Titan

Titan is a moon of the planet Saturn. It is Saturn's largest moon. Titan is the second largest moon in the whole Solar System. It is larger than Earth's moon. It is even larger than two planets - Mercury...more

A Comparison of Some Major Moons, and the Earth's Moon

This is a picture of the Earth's moon, in the center, compared to several other moons. The picture shows that the Earth's moon is a lot smaller than Ganymede, Callisto, and Titan. The Earth's moon is about...more

Rhea

Rhea was discovered by G. Cassini in 1672. Rhea is the 5th farthest moon from Saturn. Rhea is one of the icy moons. Rhea is about as wide as the state of California is long. Rhea is has many craters and...more

Dione

Dione was discovered by G. Cassini in 1684. Dione is the 7th farthest moon from Saturn. It is a small icy moon, lightly cratered, with white streaks across the surface. Dione is about as wide as the Oregon...more

Tethys

Tethys was discovered by G. Cassini in 1684. Tethys is the 8th closest moon to Saturn. Tethys is one of the icy moons. It is about as wide as the length of the Oregon coast. Tethys is has a surface, with...more

Enceladus

Saturn has // Call the moon count function defined in the document head print_moon_count('saturn'); moons. Enceladus is one of them. Enceladus is the sixth biggest moon of Saturn. The diameter of Enceladus...more

Hyperion

Hyperion was discovered by W. Bond in 1848. Hyperion is the 3rd farthest moon from Saturn. Hyperion is about the size of a large county or small state. One of the main things about Hyperion is its unusual...more

Saturn's Moons and Rings

The planet Saturn has a lot of moons. It has a total of // Call the moon count function defined in the document head print_moon_count('saturn'); moons! Saturn also has huge rings which you can see in any...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF