What we know from decades of UFO government investigations
This image released by the U.S. Department of Defense shows a 2004 encounter between two Navy fighter jets and an unknown object near San Diego. But are UFO sightings like this one a sign of extraterrestrial life, spies from a rival nation—or just weird weather?
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This article has been archived for your research. The original version from National Geographic can be found here.
This article has been archived for your research. The original version from National Geographic can be found here.
