Earth's neighbor Mars likely once had an environment that could have supported life. Now it has underground frozen water in many places. Spacecraft from Earth have visited Mars and taught us a lot about this dusty red planet. Featuring a center spread with fast facts, this book tells readers about the missions, the scientists who plan them, and more far-out facts about the fourth planet from the Sun.

Have you ever seen a comet or a shooting star? You may think they look pretty, but these giant space rocks can cause major destruction. Scientists keep a close watch on comets and asteroids using high-powered telescopes and spacecraft. Get ready to learn lots of far-out facts about asteroids and comets!

At a scorching 462°C, Venus is the hottest planet in the solar system—and poisonous clouds of gas surround it. Spacecraft from Earth have visited Venus. Learn about the amazing missions and the scientists who plan them This book features a center spread with fast facts, perfect for report writing.

Our solar system used to have nine planets. But recently, scientists ruled that Pluto was actually a "dwarf planet." So what exactly is a dwarf planet, how many of them are there, and how do scientists study and classify them? All the facts you need, and lots more, are included in this up-to-date book, featuring a center spread with fast facts.