One of the thousands of documents the FBI placed in its new online site (find out where) reportedly seems to confirm that aliens did land at Roswell, N.M., in 1947. (See where that is.) Conspiracy theorists have said for years that the U.S. government covered up its discovery of this in a field, saying instead it was a weather balloon.
More on aliens:
Find out who had roles in the TV series.
Learn about other possible UFO cover-ups.
See photos of the reputed Roswell crash site.