With all the sightings of strange objects in the sky, people have been wondering for decades what these things can be.

“Nova” poses the question we’re all asking, “What are UFOs?” Graves says he was so worried about what he saw in the air that he finally reported what he calls UAPs (Unidentified ...

NOVA: Could you tell us briefly about your own personal introduction to UFO's and what it is that got you believing in the reality? HOPKINS: I had a daytime UFO sighting on Cape Cod. It lasted ...

NOVA: I want you to comment on John Mack. SAGAN: Many of the principle advocates of UFO abduction seem to want the validation of science without submitting to its rigorous standards of evidence.

PBS’ “Nova” series examines the phenomenon of UFOs. A panel recently spoke with members of the media about the show, which is centered around a subject that has the whole world either ...