100 years 100 Billion

In just the last 100 years, we have learned the number of galaxies is not 1 but 100 Billion, the number of stars in each of the 100 Billion galaxies is 100 Billion and the number of planets in each of the 100 Billion galaxies is at least 100 Billion!

Each second, 100 Billion nuetrinos pass through each square inch of our body from one sun for sure.

In the last 100 years, we have gone from horse transportation to jets and cars, from handwritten letters to 100 Billion electronic messages, from morse code to cellular telephones, from maps to Gps...And a 100 Billion other changes...