UFO (TV series)
Following poor ratings for "Joe 90" (1968–69) and the cancellation of children's espionage television series "The Secret Service" (1969) after only one series, Lew Grade approached Gerry Anderson to look into creating his first live-action TV series. Anderson worked with his wife, Sylvia, and producer Reg Hill to create a sci-fi adventure series based around UFOs. Anderson said the core idea for the series was that UFO sightings were a common issue during the late 1960s and that idea of aliens harvesting human organs came from the work of Christian Barnard and his pioneering transplant operations. The creative team initially envisioned an organisation called UFoeDO (Unidentified Foe Defence Organisation), which was to become the secret SHADO (Supreme Headquarters Alien Defence Organisation).
Black triangle (UFO)
Declassified research (subject to a Freedom of Information request) from the UK Ministry of Defence report Unidentified Aerial Phenomena (UAP) in the UK Air Defence Region, code named Project Condign and released to the public in 2006, draws several conclusions as to the origin of "black triangle" UFO sightings.
Their researchers conclude that most, if not all, "black triangle" UFOs are formations of electrical plasma, the interaction of which creates mysterious energy fields that both refract light and produce vivid hallucinations in witnesses that are in close proximity.
Further it suggests that "the majority, if not all, of the hitherto unexplained reports may well be due to atmospheric gaseous electrically charged buoyant plasmas" which emit charged fields with the capability of inducing vivid hallucinations and psychological effects in witnesses and are "capable of being transported at enormous speeds under the influence and balance of electrical charges in the atmosphere." The researchers note that plasmas may be formed by more than one set of weather and electrically charged conditions, while "at least some" events are likely to be triggered by meteor re-entry in scenarios where meteors neither burn up completely nor impact, but rather break up in the atmosphere to form such a charged plasma. These plasma formations are also theorized to have the effect of refracting light between themselves, producing the appearance of a black polygonal shape with the lights at the corners caused by self-generated plasma coloration (similar to the Aurora Borealis).