Last year it was every 3 months sometimes to the day and then I had about a 5 month period without any but now I have had them 2 months in a row almost to the day. I was writing it in my calander trying to go long enough to get the shot (6 months) that is when I noticed they were occurring at exact times.
By extrapolating these results over the entire sky (which is some 10 million times larger), we were able to figure outâat minimumâthat there were at least 100 billion galaxies in the entire Universe. I even made a video about it.
A galaxy could average 100 billions stars, and there could be up to 500 billion galaxies in the universe. Even assuming that only 1 out of 10 stars will have planets around and thus be a solar system, the number would thus in the order of 5E21.