Gemini 4 cylindrical-object observation

Record summary

What happened Astronaut James McDivitt photographed and described a white cylindrical object with a protrusion during Gemini 4. He repeatedly rejected sensational claims that it was an alien craft and stressed that without distance cues it could have been small nearby debris or a much larger distant object. NASA analysts considered spacecraft hardware and debris. Evidence Astronaut testimony, mission photography and spacecraft records document the observation. Explanations considered The Titan second stage, another piece of mission debris or an optical effect are leading explanations. What remains uncertain The available frame lacks range and scale, and McDivitt did not claim extraordinary behaviour. Primary source Gemini 4 cylindrical-object observation — Wikipedia