> "We also find a highly significant (∼22σ) deficit of POSS-I transients within Earth's shadow when compared with the theoretical hemispheric shadow coverage at 42,164 km altitude."
I'm not an statisastroscienticianist, so I have no idea what that means, but maybe it's significant.
That being said, Kodak discovered nuclear testing was a thing before the public for all the obvious reasons.
The problem with that impressive 100500σ figure, is that she refuses to provide code which she supposedly used to supposedly prove that Earth shadow has some influence on these dots on the images made from photo plates. I.e. this 22σ figure is a "pinky promise" level "science".
The earths shadow effect lowered the transients by about 33%, which does provide evidence for physical reflection accounting for 1/3rd of the effect. To my mind, gamma ray-like exposure on the film is an extremely plausible explanation for the other 66%.