Singularity
Expanding Universe
13.8 Billion Years Ago
Highly speculative.
Physics
Timeline
 
Doppler Effect Observed for Stars
Light Waves
1848
Physics
Timeline
 
The Invention of Calculus
Motion Finds Its Mathematics
5 Jul 1687
Physics
Timeline
 
Doppler Effect for Sound and Light
Waves
1842
Physics
Timeline
 
Galileo Galilei
Observational Empiricism
born 1564
1564 to 1642
Physics
Timeline
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