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Images from: Social History

 
UFOs and Extraterrestrials

Boeing RB-47

Boeing RB-47

Credit - U.S. Air Force Museum

Number of UFO sightings

Number of UFO sightings

Credit - U.S. Air Force photo

Arecibo Observatory in Puerto Rico with its 300-meter dish antenna

Arecibo Observatory in Puerto Rico with its 300-meter dish antenna

Credit - NASA

Artist's concept of an intermediate size (300-meter) space SETI system antenna

Artist's concept of an intermediate size (300-meter) space SETI system antenna

Credit - NASA

Parabolic reflector antennas, part of NASA's worldwide Deep Space Network

Parabolic reflector antennas, part of NASA's worldwide Deep Space Network

Credit - NASA

Image generated by SETI software

Image generated by SETI software

Credit - SETI@home project

   
 



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