UF0s are a truly global phenomenon. Although many of the best-known cases have taken place in North America, amazing stories of witnesses encounters with strang

A history of unidentified flying objects including accounts of several famous sightings and results of federal investigations.

The development of radio astronomy in the 1930s provided a means of searching for evidence of intelligent life beyond earth. After more than six decades, SETI h

A former field investigator for the Condon Project, the University of Colorado's scientific study of UFOs, relates details of individual cases of reported UFO s

The wildly entertaining and eye-opening biography of J. Allen Hynek, the astronomer who invented the concept of "Close Encounters" with alien life, inspired Ste