29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
3758419
344748
2
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
jan 1, 150 BC - Ptolemy improves upon the geocentric model to account for retrograde planetary movements
Added to timeline:
12 Feb 2020
0
0
152
History of Cosmology
Date:
jan 1, 150 BC
Now
~ 2175 years ago
