Alpha Centaurians

Alpha Centaurians are described as human-passing, medium height, olive-skinned, and distinguishable only by an unusual serenity. Their role follows from their address: at 4.37 light years, Alpha Centauri is the nearest star system, so the lore casts them as Earth's patient, frequent, undramatic observers, technologically ancient and temperamentally quiet.

The best-known thread runs through Frank Stranges's Stranger at the Pentagon (1967), which described a 1959 meeting with a visitor named Valiant Thor said to have lived as a Pentagon guest for three years. Stranges placed Thor's origin at Venus, but later contactee taxonomies re-attributed him to Alpha Centauri as Venus became uninhabitable in fact. Costa Rican contactee Enrique Castillo Rincón described 1970s encounters with self-identified Alpha Centaurians (a rare Latin American thread), and the archetype recurs in Sheldan Nidle's and Elena Danaan's channeled catalogs.

The Stranges and Castillo Rincón accounts are the substantive corpus; both rest entirely on their authors' testimony.

Val Thor became a durable internet legend, and Alpha Centauri's real-world prominence (the destination of the Breakthrough Starshot concept, and host of the confirmed planet Proxima b) keeps the neighbor-civilization idea culturally alive well beyond ufology.

Skeptics note the tradition is testimony without a single corroborating artifact, that the Venus-to-Centauri address change is the lore's standard unfalsifiable retreat, and that no Pentagon record or witness has ever supported the Thor story. Astronomy keeps the system interesting; the visitors remain unevidenced.