Executive Summary on UFOs

RCAF pilot Childerhose Canada 1956 UFO Photo over the Canadian Rockies near Ft. MacCleod, Alberta, by Canadian Air Force pilot R. J. Childerhose
A Royal Canadian Air Force pilot while flying in a 4 plane formation at an altitude of about 11 km on 27-Aug-1958, saw and photographed a bright disc, that was remaining stationary between the clouds.
From a letter to Philip Klass: "I had the object in good view for upwards of 45 seconds. It was stationary, with sharply defined edges. Looked like a shiny silver dollar sitting horizontal. The light emitted was much brighter than the existing sunlight and overexposed the film causing blurred edges in the picture... It neither moved nor changed shape while I had it in sight."
From a letter to Dr. James McDonald: "...the photo of the bright object doesn't represent quite what appeared to the naked eye. When I first saw the object it appeared as a very bright, clearly defined discoid, like a silver dollar lying on its side. The photo makes it look like a blob of light, the result of light intensity. It appeared much brighter than that (sic) of the sun which, of course, was setting behind the clouds up ahead. What appears in the Kodachrome slide is a disappointment, really." "It was in good view for some minutes because I looked at it trying to figure out what I was seeing and I called the attention of the formation to it before remembering that I had a camera in my leg pocket."

The 1958 Trindade Island Brazil UFO was photographed while seen by more qualified observers than any other sighting.
When ufologists and skeptics can't find strings, shadows or signs that a UFO photo is faked, they question the credibility of the photographer and witnesses. Trained observers -including pilots, ship captains etc- are generally considered good witnesses. It is the credibility of the 47 crew members on the deck of the Brazilian Navy ship "Almirante Saldanha" that makes the Trindade, Brazil UFO photos so interesting.
As part of its contribution to the 1957-58 International Geophysical Year, the Brazilian Navy set up a weather station on the small rocky island of Trindade, in the south Atlantic Ocean. Observers began spotting unusual aerial activity visually and on radar. At noon on 16-Jan-1958, the UFO shown here appeared for a few seconds within view of the ship's company. The incident was not isolated, but at least seven other sightings had occurred in the island or near the water during the end of 1957 and in January 1958.
The crew onboard saw a grey object approach the island, fly behind a mountain peak and then do a acute-angle turn around and head back the way it came, disappearing at high speed over the horizon. Among those present was civilian photographer Almiro Barauna, who snapped a series of 6 photos in intervals of 14 seconds, of which 4 showed the UFO. After the ship returned to port, the photos, which had been developed on board in a makeshift darkroom, were turned over to the Brazilian Navy Ministry. Analysts determined the photos to be authentic and concluded they showed a diskoid object moving at 900-1000Km/hr.
According to Capt. Viegas, the object was like a flattened sphere encircled at the equator by a large ring or platform. In Barauna's words, "...it made no noise, although with the shouting of the people on the deck and the noise of the sea, I cannot be certain. It had a metallic look, of an ash color, and has like a condensation of a green vapor around the perimeter, particularly in the advancing edge. Its motion was undulating, like the flight of a bat."
Today it is thought that the glowing "halo" around UFOs -which is also why they often appear as a "blob"/ball of light at night with changing neon-like colors white / blue / yellow / red and "blurred" / fuzzy in photos- is due to the ionised air "plasma sheath" related to the flying saucers' flight mechanism. The absorption characteristics of the plasma can also partly account for the daytime hazy or smoky appearance of the atmosphere around the UFO. When the surrounding illumination is brighter than the plasma, the plasma absorption may be greater than its emission, making it look darker or hazy. Read info on UFO illumination and performance.
The photos were later released to the Press by the President of Brazil, Mr Joscelino Kubitschek. [full story, all 4 Trindade UFO photos, more, more2, more3]
Note: These photos are poor quality, overexposed and BW; there are many photos of multi-witness and well documented sighting stories over the past ~60 years. But I present this as a classic case, because it has 3 attributes: multiple witnesses, authenticity verified by Brazilian authorities and photos taken at a time when we can in retrospect be reasonably sure that no goverment had anything remotely similar. [More classic UFO cases]

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