UFOs : What scientists say may shock you! /
By N. B. Grace
- New York : Scholastic ; 2008.
- 64 pages : color illustrations , maps ; 23 cm .
- 24/7 Mystery Files, 24/7: Science Behind the Scenes (Mystery Files) .
Strange "fires in the sky," flying saucers, little green men with huge eyes, all are sightings people have claimed to have encountered. Are they real, or do they just show how our eyes can play tricks on us?