Great Falls and the Mariana Film
On 15 August 1950 Nick Mariana, who managed the local baseball team, saw two bright objects over the stadium with his secretary and got them on 16 mm film. The sixteen seconds he shot are among the first motion pictures of the phenomenon ever taken. The Air Force attributed the footage to sunlight reflecting off two F-94 fighters that passed over the town at about that time. Mariana replied that he had seen the aircraft separately and later, and claimed that the first frames — in which the objects were larger — were missing when the film came back from the military. The film survives and is still gone through frame by frame by both sides of the argument.
Popocatépetl and the Objects in the Crater
An active volcano seventy kilometres from Mexico City whose crater is watched around the clock by the cameras of the national disaster prevention centre. The recordings are published openly, and since 2012 elongated glowing objects have regularly been found in them, entering or leaving the crater. The best-known clip, showing a cigar shape about a kilometre long, went round the world in October 2012. Volcanologists attribute such footage to a combination of video compression artefacts, birds and insects passing close to the lens, and glowing fragments thrown out in minor explosions. The cameras keep recording, and the material accumulates faster than anyone works through it.
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