Mysterious flying objects, and other unexplainable skylights, have long enticed the human imagination, from Roswell rumors to alien conspiracies on The X-Files. Have you ever seen a UFO? Do you believe the truth is out there?
Find out how much you know about flying saucers and the like.
Before becoming managing editor, Jeanna served as a reporter for Live Science and SPACE.com for about three years. Previously she was an assistant editor at Scholastic's Science World magazine. Jeanna has an English degree from Salisbury University, a Master's degree in biogeochemistry and environmental sciences from the University of Maryland, and a science journalism degree from New York University. Follow Jeanna on Google+.