The History of Astronomy Simplified
This summarizes Adam Smith's History of Astronomy discussing Aristotle, Ptolemy, Kepler, Descartes, and Newton
The System of Concentric Spheres
Part 1
The Flat Earth; Increase of Spheres; Eccentric Spheres
Part 2
The Stoical System
Part 3
The System of Copernicus
Part 4
Reception to Copernicus' System
Part 5
Tycho Brahe' System of Astronomy
Part 6
Kepler's System of Astronomy
Part 7
The Observations of Cassini
Part 8
Descartes' System of Astronomy
Part 9
The Third Element: Matter
Part 9b
Isaac Netwon's System of Astronomy
Part 10
Gravity and Mass
Part 11