There are eight regular satellites in orbit around Jupiter. These are moons that formed within the gravity field of Jupiter. They were formed at the same time and out of the same material as the planet itself. They have circular orbits and orbit in the same direction as the planet.

The four largest are the Galilean moons. These are the ones seen from any telescope on Earth.

But there are four more moons. These little known moons are odd shaped. They orbit close to the planet, providing the material that makes up Jupiter's ring system. In order from Jupiter they are Metis, Adrastea, Amalthea and Thebe.

This book is about these four moons.

How much do you know about these moons?

Do you know:

How many rings does Jupiter have?

How do these moons make the rings of Jupiter?

What happens to Jupiter's rings?

How big are the craters on Amalthea?

What is the reddest object in our solar system?

And much more.

Find out the answers to these questions and more and amaze your family and friends with these fun facts.

Ages 8 and up.

All measurements in American and metric.

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