Curiobase

Accounts of people taken, examined and returned by non-human beings — a large body of firsthand testimony and no physical proof.

A physicist who says he worked on recovered craft at a facility south of Area 51, an account argued over since 1989.

The claim that human history has been shaped by non-human intervention rather than by its documented causes.

Reported structures, lights and image irregularities on the Moon said to indicate activity that is not publicly acknowledged.

The claim that an intelligence not of human origin is present and interacting with people.

A Utah property where owners and researchers have reported cattle mutilations, anomalous lights and creature sightings since the 1990s.

The assertion that a government programme exists to retrieve and reverse-engineer non-human craft. Individual alleged crashes are their own incident records.

The proposition that governments hold evidence of non-human craft and are releasing it slowly, or not at all.