حادثه Vela: آیا یک ماهواره آمریکایی یک آزمایش هسته ای مخفی را در سال 1979 شناسایی کرد؟

The Vela Incident: Did an American satellite detect a secret nuclear test in 1979?

Was an usual flash detected off the coast of South Africa by an American satellite caused by a secretive atmospheric nuclear test?