33
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
3536620
322008
2

jan 1, 1974 - Beatrice Tinsley does research on whether the universe is open or closed and her models provide the first approximations on what protogalaxies would look like

Added to timeline:

20 Nov 2019
0
0
317

Date:

jan 1, 1974
Now
~ 51 years ago