Researcher, American
George H. Leonard
NASA scientist and amateur astronomer who analyzed Apollo lunar photographs for evidence of artificial extraterrestrial structures on the Moon.
Background and Credentials
George H. Leonard emerged in the 1970s as a significant UFO researcher with a unique vantage point—NASA affiliation combined with independent analysis of the agency's own lunar photography. As both a former NASA scientist and amateur astronomer, Leonard possessed credibility in both institutional and fringe research circles, positioning him to challenge mainstream interpretations of the Moon's landscape.
Photographic Analysis and Somebody Else is on the Moon
Leonard conducted an exhaustive review of thousands of NASA photographs from the Apollo lunar missions and various lunar probes of the 1960s and 1970s. His systematic scrutiny of these images led him to conclude that the Moon's surface bore unmistakable signs of artificial construction and extraterrestrial mechanical activity. In 1976–77, Leonard published his magnum opus, Somebody Else is on the Moon, which presented detailed photographic evidence and interpretations arguing for the presence of alien machinery on the lunar surface.
The book claimed to document immense mechanical rigs, some reportedly over a mile in length, excavating and working the lunar surface. Leonard described strange geometric ground markings and symbols inconsistent with natural formation, massive engineered structures rising several times higher than anything constructed on Earth, and an elaborate network of vehicles, tracks, towers, pipes, conduits, and conveyor belts running across and through lunar craters. To clarify ambiguous details in low-resolution Apollo photographs, Leonard provided hand-drawn sketches interpreting features he believed showed artificial construction.
Methodology and NASA Contacts
Leonard's research methodology included interviews with dozens of NASA officials and careful review of hours of astronaut mission tapes. He cross-referenced official NASA documentation with his photographic interpretations, seeking to establish that institutional insiders corroborated his findings of extraterrestrial activity on the Moon. This approach lent an air of insider validation to claims that mainstream NASA had suppressed or downplayed evidence of alien presence.
The photograph-based methodology was rigorous in execution but inherently contested—the Apollo-era imagery was low-resolution, often poorly reproduced in print, and subject to interpretation. What Leonard identified as artificial structures, mainstream astronomers and NASA scientists attributed to natural geological formations, shadows, lighting artifacts, and photographic degradation.
Legacy and Reception
Despite mainstream scientific skepticism, Somebody Else is on the Moon achieved significant circulation and remains in print through multiple editions. The work became foundational in lunar anomaly research, influencing decades of subsequent investigation into alleged artificial structures and evidence of non-human activity on the Moon. Leonard's combination of institutional credibility and rigorous photographic analysis made him influential in fringe UFO circles, even as the scientific establishment dismissed his conclusions.
The broader reception of Leonard's work illustrates a persistent tension in UFO research: the challenge of verifying extraordinary claims from ambiguous visual evidence. His legacy endures as both a cautionary case study in pattern recognition and interpretation bias, and as a serious early attempt to document potential signs of extraterrestrial presence using the most reliable available data—actual NASA lunar mission imagery.
Notable claims
- The Moon's surface shows unmistakable signs of artificial construction and machinery over a mile long
- Geometric markings and symbols on the lunar surface are engineered, not natural
- An elaborate network of tracks, towers, pipes, and conveyor belts operates across lunar craters
- NASA officials and astronauts privately confirmed evidence of extraterrestrial lunar activity
- Structures on the Moon are several times higher than anything built on Earth
Key works
- Somebody Else is on the Moon (1976–77) — primary analysis of NASA lunar photographs for artificial structures
- Interviews with NASA officials and astronauts regarding lunar anomalies
- Hand-drawn interpretive sketches of ambiguous features in Apollo photography
- Systematic comparative analysis of thousands of lunar probe and Apollo mission images
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Further reading

Somebody Else is on the Moon
Leonard's own book
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Also available
Aliens on the Moon: Dark UFO Mysteries Exposed
Explores shocking encounters of astronauts on the moon with UFOs and evidence of aliens on the lunar surface. Features never-before-seen archival photographic evidence revealing extraterrestrial structures, advanced spacecraft, and a warning to astronauts never to return to the moon.
UFO: The Greatest Story Ever Denied II - Moon Rising
Documentary examining what astronauts found on the moon and the alleged cover-up concealing these discoveries. Features never-before-seen pictures of the Moon in true color and uncovers NASA's long-kept secrets about massive structures on the lunar surface.
Aliens and Astronauts: UFO's on the Moon
Investigates unexplained geometric structures on the lunar surface and explores evidence that extraterrestrial life may have established bases on the moon. Addresses theories about the moon's origins and anomalies captured in NASA photography.
Alien Moon
Explores theories about the moon's enigmatic and potentially sinister alien origins. Series. Examines astronaut UFO encounters, flashing lights, and geometric anomalies on the lunar surface as evidence the moon may be a base for ancient aliens.
Alien Enigmas: UFOs on the Moon
Documentary investigation of anomalies and alleged UFO activity on the Moon's surface. Examines evidence of extraterrestrial structures and the scientific mysteries surrounding lunar formations.
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Notes
- Somebody Else Is on the Moon, George H. Leonard, Amazon Books
- Somebody Else is on the Moon, George H. Leonard, Journal of Borderland Research
- Somebody Else Is On The Moon — Internet Archive, George H. Leonard, Internet Archive
- NASA Scientist Speaks Out: There's Someone Else On The Moon, Various, Ikon London Magazine
Filed under
ProvenanceAgent indexedUpdated 3mo ago4 sources
Drafted by the archive's AI research agent from the sources below; corrections from readers are reviewed and folded in.
- First indexed
- 28 JUL 26 // 14:18Z
- Last updated
- 28 JUL 26 // 14:18Z
- Somebody Else Is on the Moon, George H. Leonard, Amazon Books
- Somebody Else is on the Moon, George H. Leonard, Journal of Borderland Research
- Somebody Else Is On The Moon — Internet Archive, George H. Leonard, Internet Archive
- NASA Scientist Speaks Out: There's Someone Else On The Moon, Various, Ikon London Magazine