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Evidence of UFOs visiting Earth may have been discovered in a study of a treasure trove of photos of the night sky from the 1950s. Scientists have been examining images taken before the beginning of the Space Age and have discovered mysterious flashes of light that appear in one image and then vanish in the next. Studies suggest that some of those blips may be sunlight bouncing off flat, reflective objects high above Earth, years before Russia launched the first satellite, Sputnik. Psychopaths' brains unlocked, supersonic travel is coming back, Alzheimer’s reversed, plus the difference between diet and zero drinks - all this and more in our latest weird science newsletter The research comes from the VASCO project (Vanishing and Appearing Sources during a Century of Observations), led by Beatriz Villarroel of Nordita at Stockholm University. Her team pored over pre–Space Age photographic plates from California’s Palomar Observatory (1951–1957), hunting for 'transients' - points of light that appear once and never again. What they found is eyebrow‑raising. After sifting more than 100,000 candidates, the team reports: One case lined up with the famed 'flying saucer' cluster over Washington DC on July 27, 1952. The pattern, researchers say, fits flat, highly reflective objects in high orbit - not round space rocks or dust, which would streak during Palomar’s 50‑minute exposures. The plates pre‑date Sputnik in 19657, so if these were glints from orbit, they weren’t from human‑made satellites. That has led the authors to float a few possibilities: unknown reflective objects in high Earth orbit, some UAP operating in space as well as air, or a still‑mysterious atmospheric effect linked to nuclear detonations that somehow produced next‑day flashes seen from Palomar.