Did humans really land on the moon?

Apollo 11 landed on July 20, 1969, and five more crewed landings followed through Apollo 17 in December 1972, putting twelve astronauts on the lunar surface. The evidence is physical and independently verifiable. Astronauts returned 382 kilograms of lunar rock and soil whose composition, isotope ratios, and lack of water-bearing minerals differ from any terrestrial rock and match the samples later returned by uncrewed Soviet and Chinese missions. Laboratories worldwide have studied these samples for decades.

Three landings left retroreflector arrays that still function. Observatories bounce lasers off them routinely to measure the Earth-moon distance to millimeter precision, which is how we know the moon is receding about 3.8 centimeters per year. Any facility with a sufficient laser and telescope can do this. The Lunar Reconnaissance Orbiter has photographed all six landing sites since 2009, showing descent stages, equipment, and the astronauts' foot trails, and India's and Japan's orbiters have imaged them independently. The Soviet Union, which had every incentive to expose a fraud, tracked the missions and never disputed them.

The specific hoax claims have specific answers. The flag appears to wave because a horizontal rod held it out and the astronauts' handling set it oscillating in vacuum with no air to damp it. Stars are absent from photographs because the exposures were set for a brightly sunlit surface, exactly as a photo of a floodlit stadium at night shows no stars. Shadows fall in different directions because of uneven terrain and wide-angle lenses. Radiation in the Van Allen belts was survivable because the spacecraft passed through quickly on a trajectory chosen to minimize exposure. The scale of a successful conspiracy, requiring the silence of hundreds of thousands of people for over fifty years, is itself the strongest argument against it.