Space & Extraterrestrial Theories

In 1976 NASA's Viking 1 orbiter photographed a mesa in the Cydonia region of Mars that, under low resolution and slanting sunlight, resembled a humanoid face. Fringe researchers argued it was an artificial monument built by a lost Martian civilization and that NASA covered up the truth, but higher-resolution imaging over the following decades resolved it into an ordinary eroded hill.

The Dulce Base legend claims a multi-level, jointly-operated human-alien facility hides beneath Archuleta Mesa near Dulce, New Mexico, complete with genetic experiments, a 'Nightmare Hall,' and a 1979 firefight between aliens and human security. No physical evidence for any such base has ever surfaced. The story's documented origin is far stranger than the myth: a real U.S. Air Force disinformation campaign, run through AFOSI, that targeted Albuquerque businessman Paul Bennewitz and helped manufacture a modern UFO legend.

Robert Temple's 1976 book The Sirius Mystery claimed the Dogon people of Mali held impossible ancient knowledge of Sirius B, an invisible white-dwarf companion star with a ~50-year orbit, taught to them by amphibious extraterrestrials called the Nommo. The claim rests on 1930s-40s ethnography by Marcel Griaule and Germaine Dieterlen. But a 1991 field restudy by anthropologist Walter van Beek found Dogon informants did not actually hold the Sirius-B lore Griaule reported, Sirius B's existence and orbital period were already well known to Western science before Griaule arrived, and Carl Sagan and others argue the knowledge, if genuine, reached the Dogon through ordinary human contact.

The Black Knight satellite is the belief that an artificial object of extraterrestrial origin, roughly 13,000 years old, has been silently orbiting Earth in a near-polar orbit. In reality it is a single 'legend' assembled from at least six unrelated, individually explained events, capped by 1998 NASA photos of a lost thermal blanket.

A common sub-theory of the Moon Landing Hoax claim holds that the Van Allen radiation belts surrounding Earth make a crewed lunar mission impossible — that astronauts would have received a lethal radiation dose before even reaching the Moon. The scientific record contradicts this. NASA engineered the Apollo trajectory to minimise belt exposure, reducing transit time to roughly one hour each way through the most intense zones. Total measured doses across the missions were well within established safe limits. The physicist who discovered the belts, James Van Allen, explicitly endorsed the Apollo missions and rejected the radiation-impossibility claim.

A persistent Moon Landing Hoax sub-theory claims that director Stanley Kubrick filmed fake Apollo mission footage on a soundstage — often citing his 1968 film *2001: A Space Odyssey* as proof of his technical capability. Multiple independent lines of evidence refute the claim. The sustained low-gravity movement shown in Apollo footage (1/6 g for hours at a time) was technically impossible to simulate with 1960s film technology; *2001* itself used techniques that would have been immediately identifiable if applied to Apollo footage. The Soviet Union, tracking the missions and with every incentive to expose a fake, confirmed the missions. The Apollo program returned 842 lbs of lunar samples distributed to international labs. Lunar Reconnaissance Orbiter photographs from 2009 onward show Apollo landing sites with hardware and tracks still visible.

Claims that Artemis II mission photos, videos, or broadcasts prove the lunar flyby was staged or AI-generated.

Claims that governments run hidden breakaway space fleets or off-world bases.

A media-provenance page tracing alien-autopsy film and image claims.

Tracker for claims about official UAP historical reports and what they do or do not establish.

Claims that NASA or governments will fake an alien or religious event using holograms to create world government.

Claims that mummified remains promoted from Peru are non-human alien bodies.

Claims that a hidden planet is approaching Earth and repeatedly predicted to cause apocalypse.

The claim, based on a 1984 packet of allegedly leaked documents, that President Truman in 1947 established a secret committee (Majestic 12 or MJ-12) of 12 scientists and military officers to study recovered UFO craft from Roswell.

The 1947 crash of a high-altitude Project Mogul balloon near Roswell, New Mexico that was briefly described by the US Army as a recovered "flying disc" before being reclassified as a weather balloon — and later, in 1994, as a classified Soviet nuclear-test surveillance balloon.

The theory that NASA faked the Apollo moon landings between 1969 and 1972, filming them on a secret movie set rather than actually sending astronauts to the lunar surface.