Few things capture the public's curiosity like Area 51. The top-secret military base (which doesn't officially exist) has been the subject of conspiracy theories for decades. What actually went on there? Something tells us we'll never know for sure. However, a recently revealed series of photographs provides some tantalizing new clues.
The photos, which were published by National Geographic, show a titanium A-12 spy plane. In one image, the satisfyingly sci-fi-looking plane hangs upside down while it is prepared for radar testing. In another shot, a group of officials with heavy equipment "remove all traces of the A-12 spy plane" after it went down in the Utah desert in 1963.
Of course, the photos don't prove that alien life exists--but they do go a long way toward proving the government wasn't exactly forthcoming with what was going on at Area 51. Cue the "X-Files" theme song.