This is an out of focus sky lantern.
A defocused aperture-shaped highlight. Not primarily a diffraction effect.
The lantern is, more or less, a point source. The image is badly out of focus. The lens maps the light from a point source into a...
It's not the motor its the iris blades
Looks like a plane in the sky, I am not sure how geo-locating it solves anything given how long ago it is there are no ADSB etc records.
Looks like at the time the plane was beginning descent presumably to...
Since most 1950s-era tests were done to be observed and assessed with a variety of remote instruments and aircraft, they had to be done when the skies were clear enough for every platform to see the detonation; the goal was to accurately measure...
I guess there might be a broad correlation between weather at the Mount Palomar Observatory and the former Nevada Test Site which is
very roughly 410 km/ 255 miles to the NNE; tests there from 1951. (There were no tests in 1950 as far as I can...
Since most 1950s-era tests were done to be observed and assessed with a variety of remote instruments and aircraft, they had to be done when the skies were clear enough for every platform to see the detonation; the goal was to accurately measure...
Yes, they have H&M in Iceland! 64.148195, -21.935268, Google Maps shows a couple of others in Rekyjavik.
It shares a building with the Icelandic Phallological Museum, Wikipedia https://en.wikipedia.org/wiki/Icelandic_Phallological_Museum
I...
Thanks, everyone, for keeping the discussion largely polite and professional in recent posts. I know it's tempting to wander off into a discussion of motives or more aggressive criticism in a long thread like this. At times, the thread has...
From Villarroel, Streblyanska, Bruehl and Geier's "A Response to paper Critical Evaluation of Studies...", https://arxiv.org/abs/2602.15171,
usefully quoted by @NorCal Dave, post #865, my emphasis:
Finally, the analysis demonstrating that being...
There's another self-correlative effect in that -- the POSS-1 shots and UFO sightings roughly track with the weather. That is, you can't photograph the sky when it's cloudy; people don't see UFOs in the sky (or planets or bright stars) when it's...
From Villarroel, Streblyanska, Bruehl and Geier's "A Response to paper Critical Evaluation of Studies...", https://arxiv.org/abs/2602.15171,
usefully quoted by @NorCal Dave, post #865, my emphasis:
Finally, the analysis demonstrating that being...