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Studies: 1950s Light Flashes Correlate With Nuclear Tests and UFO Reports

  • On October 20, the Vanishing & Appearing Sources during a Century of Observations team published in Scientific Reports linking Palomar Observatory Sky Survey transients to nuclear tests and UAP reports.
  • Using digitized POSS-I plates spanning November 19, 1949 to April 28, 1957, researchers compiled a 2,718-day dataset with about 2,000 photographic plates and 124 above-ground nuclear tests .
  • Data reveal quantified increases linked to test dates: transients were 45% more likely within 24 hours of a nuclear test, and the day after had a 68% higher likelihood, with an 8.5% rise per UAP report.
  • The team noted evidence ruling out simple defects, as plate defects rarely align with specific historical test dates; day-after timing suggests transients are unlikely immediate atmospheric fallout, while researchers claim added empirical support for UAP reports and nuclear weapons activity.
  • Experts urged studying original POSS-I glass plates under a microscope and applying microscopy and archive cross-checks to other photographic plate archives and the Vera C. Rubin Telescope later this year, noting high-altitude balloons, meteors, reflective debris remain plausible causes.
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HISTORY broke the news in on Monday, March 11, 2019.
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