"In a universe that stretches across billions of light years, can Earth really be the only home of intelligent life? This book avoids the sensationalism often attached to discussions about UFOs and aliens. Instead, science is coupled with historical information and firsthand sightings to teach students about responsible research, evaluation of sources, and critical thinking, even when confronted with mysterious topics"--Provided by the publisher.

Includes glossary.

What is a UFO? -- Is there life out there? -- First sightings -- Roswell UFO crash -- Area 51 -- Close encounters -- Strange lights -- Government studies -- UFO organizations -- Hoaxes & misunderstandings -- The scientists' view -- UFOs in popular culture -- Is the truth out there?