1 gen 1613 anni - After being so warmly accepted at Rome, Galileo writes three letters to formally take his position on the heliocentric theory of the universe. His main reason for believing Kepler and Copernicus were his observations of sunspots moving around the sun.
Aggiunto al nastro di tempo:
Data:
1 gen 1613 anni
Adesso
~ 411 years ago
