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All the facts you need, and lots more, are included in this up-to-date book. Learn about the amazing missions to Neptune, the dedicated scientists who plan them

Earth is the only planet in our solar system that is suitable for life. It has liquid water, oxygen, and enough gravity to hold its own atmosphere, but do your

How do scientists know anything about Uranus? Spacecraft from Earth have visited Uranus. Featuring a center spread with fast facts, this book highlights the mis

Jupiter is bigger than any other planet in our solar system. It has rings and centuries-old storms. It has more than sixty moons, too—some with underground oc

Everything in our solar system orbits the Sun. It is the center of our solar system, and affects everything in it. Robotic explorers have taught us a lot about