The Contactee Movement (1950s-70s).

[DOCUMENTED] Emerged after Kenneth Arnold (1947) and crystallized in 1952 around George Adamski. Defined by the 'Space Brothers' archetype - humanoid mentors warning against nuclear testing. [DOCUMENTED] Roster commonly includes Adamski, Truman Bethurum, George Van Tassel, Daniel Fry, Orfeo Angelucci, George King, Buck Nelson, George Hunt Williamson. Institutionalized via Van Tassel's Giant Rock conventions (1953-1971/77) and several incorporated organizations (Understanding Inc., Ministry of Universal Wisdom, Aetherius Society). [DOCUMENTED] Scholars (Partridge, Rothstein, Zeller, Denzler) treat it as the formative substrate of UFO religion. [CLAIM/DISCREDITED] The underlying alien-contact narratives are unverified and, for the flagship figures (Adamski, Meier), positively debunked. The era is conventionally said to have ended with the Betty & Barney Hill abduction (1961), which replaced friendly Space Brothers with trauma.