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.
Scientists estimate that there are about 1 000 000 000 000 stars in the Milky Way galaxy, which is one of ~1 000 000 000 000 galaxies. Although these are rough estimates, using these numbers we might imagine there are...a lot...of stars. The number is so large we usually write it in a special way.