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Thanks! It's very difficult to find these relevant, older papers, but I'll keep digging and add them here: https://github.com/jannefi/vasco60/blob/main/docs/PLATE_FORENSICS_LIBRARY.md

I came across an older but highly relevant paper while digging into photographic plate artefacts: Greiner et al. (1990), Astronomy & Astrophysics, 234, 251–261 "Discrimination between star-like defects on photographic plates and possible γ-ray...

In the original video, the moment the "UFO dives into the clouds" is exactly when it just "turned a corner," which seems to correspond to the movement of the camera lens. It is possible that this movement caused the camera body to temporarily...

My quick attempt to recreate this ufo by filming sun lens flare It doesn't go "behind clouds" the same way - it hides rather abruptly (I move phone to the side and sun hides behind a wall) but I bet If I obscure sun using some transparent...

I just recreated same effect - at 00:01 ufo goes into\behind clouds. Obviously it was sun(top-right) that was obscured by another cloud Here is video repeated 3 times (without filters & without zoom): I

I have a bit of experience watching birds and john.phils video does not seem very bird like to me, it looks to me like it blows in gets temporarily stuck then gets blown a few more times.

It's most likely a plastic bag. (PR060) The object traveled 484.27 meters in 57 seconds. That's about 19 mph. Credit to : - @i11umin8ed (twitter/x)

I restored the video to 4:3, 1:1, and 9:16 aspect ratios respectively, but ultimately found that in the 3:4 frame, the figures look normal and the rocket's glow appears approximately circular

Here's a PDF with the analysis I made while writing an article about the case for UFO Sweden. It was intended to be a summary of my recreation using small models suspended on fishing wire, but I couldn't resist including my take on the whole...

@maxim.zavads Two other possibilities come to mind. (1) You're near an active military engagement. I hear a distant rumble of something that may be the sound of firing, so that's an avenue to explore. (2) These lights all seem to begin in the...

Saw this recently. I wonder what the range of those balloons post drop is. Source: https://youtube.com/shorts/l27O2unnUIU?is=_TLTkrd91DC67E9N

Some perhaps more interesting few seconds, are from frames 5784 (3:11.10) to 7352 (4:05.07), nearly a minute of video missing from Corbell's leak, in which the object appears to turn around, in much the same way as the windmill object does. The...

I just recreated same effect - at 00:01 ufo goes into\behind clouds. Obviously it was sun(top-right) that was obscured by another cloud Here is video repeated 3 times (without filters & without zoom): I

The camera is looking down, not up (based on the on-screen display of numbers in the Corbell leak)

My prior was "big shrug", but, after seeing that, my posterior is "could so easily be lens flare". Just as a sanity test - is the sun (presumably the only sane source of the flare) and the shadows it casts, at the appropriate angle? With the poor...