Researchers analyzing 100,000+ transients in 1949-1957 astronomical plates found they were 45% more likely during nuclear tests and showed small but statistically significant correlations with UAP reports. The findings argue against simple plate defects and add to earlier work [1] that found puzzling Earth shadow deficits and aligned transients suggesting reflective objects at high altitudes.

[1]: https://www.researchgate.net/publication/394040040_Aligned_m...