Mission Space Science Searching for Extraterrestrials Cynthia O’Brien CRABTREE PUBLISHING COMPANY WWW.CRABTREEBOOKS.COM
CRABTREE PUBLISHING COMPANY WWW.CRABTREEBOOKS.COM
Contents CHAPTER 1 What Are Extraterrestrials CHAPTER 2 Looking for Life CHAPTER 3 Clues on Earth CHAPTER 4 Exploration Tools CHAPTER 5 Strange Sightings CHAPTER 6 What’s Next ACTIVITY Your Space Science Mission Glossary Learning More Index and About the Author 4 10 20 28 34 40 44 46 47 48
