Gordon Cooper

Leroy Gordon "Gordo" Cooper Jr. was one of NASA's original Mercury Seven astronauts and a decorated test pilot who flew the final Mercury mission in 1963 and commanded Gemini 5, credentials that lent significant authority to his subsequent claims regarding unidentified aerial phenomena. During his military service, Cooper reported multiple UFO encounters, including a 1951 incident over Germany where he observed metallic, disc-shaped craft flying in formation, and a separate alleged 1957 event at Edwards Air Force Base where he claimed to have filmed a UFO landing, though the footage was reportedly confiscated by authorities. Unlike many of his astronaut colleagues who maintained silence on the subject, Cooper became an outspoken advocate for disclosure, testifying before the United Nations in 1978 and asserting that the government possessed evidence of extraterrestrial visitation and was engaged in a systematic cover-up. His willingness to leverage his status as a space pioneer to challenge official narratives made him one of the most significant astronaut whistleblowers in UFO history, bridging the gap between credible military testimony and the broader unexplained aerial phenomena community.