المنطقة 51 منطقة عسكرية في جنوب صحراء نيفادا
المقال ده ممتاز في تعريفك بالمنطقة 51
http://en.wikipedia.org/wiki/Area_51
بالنسبة لفيلم الكائن الفضائي بتاع روزويل فيه اعتراضات كتير عليه وتشكيك في صحته
----
Another twist in the Roswell story also occurred in 1995 when Ray Santilli, a British film producer, produced a film supposedly showing the autopsy of an alien from a 1947 New Mexico crash. Skeptics argue this film showed the alleged surgeons utterly disregarding conventional surgical and scientific procedure, and for this reason—and many others—the film is widely considered spurious both within and outside the UFO community. However, nothing has emerged to definitively prove the film a hoax. The autopsy film also has certain elements that make it possible that it was indeed filmed in 1947. Generally, however, the film is considered to be either a hoax by Santilli, or a real 1947 film that does, for some reason, show the autopsy of a rubber mannequin or perhaps a doctored human body. Some ufologists still maintain that the film might be an authentic alien autopsy.
http://en.wikipedia.org/wiki/Roswell_UFO_incident