January 27, 2025 at 10:36 am
#53351
Participant
2. The other aspect is the formation process of a star. It happens gradually over millions of years. The star does not “ignite” until its mass reaches a critical density. You can search for “star formation” to find more information. Thus, in the early Earth, our Sun had not yet become a star; it was a giant gas cloud, and due to gravity, it started collapsing into a smaller size gradually. Eventually, it reaches a critical density needed for nuclear fusion and becomes a star.
That explains the later appearance of sun and moon. But what about stars and constellations? They should be visible without the ignition of sun, especially since those beings could see without light.