Now “the staring at the sun hypothesis” is possible. However, I can’t even look at the sun for 2 seconds. Not in unclouded view. But it is still possible.
The fact that people miles away saw it indicates (if it is true that people miles away saw it) is that it was not the result of people staring at the sun for prolonged periods. People not in attendance wouldn’t have known to look at the sun. So if this is true, then this hypothesis should not be true.
The communist newspaper reporting the event seems to give the event some credibility. Did the newspaper report that the muddy ground was dried, as well as people’s clothing? If this was the account of a nonchristian observer, then obviously there was more at work here than a collective hallucination or bleaching of retinas. The only truly possible mechanism besides God, would have to be a machine or something like a bomb. For the “miracle” to be visible 40 km (whatever the distance) away would mean that this would have to be some enormous political/military hoax. Some form of technology would have to be used to create the display, but without the possibility of harming civilians. So, did this technology exist, or not in 1917? And who would have had the money for its innovation?
If this question cannot be answered, then the miracle, IMO, cannot be debunked. This still doesn’t mean it’s legit, just that it can’t be debunked presently