For years, space scientists have been asking the question "Is there other life out there?" Readers will enjoy the fascinating history of our search for extraterrestrial life--from aliens to tiny microbes--with technology such as telescopes, radio signals, and monitoring systems.

Includes index.

What are extraterrestrials? -- Looking for life -- Clues on Earth -- Exploration tools -- Strange sightings -- What's next? -- Activity : your space science mission.