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Materials Similar to Spiral Nebula Rotation

• 53%: Ptolemy/Copernicus/Tycho Model
• 52%: Spheres of Eudoxus
• 52%: Differential Galactic Rotation
• 52%: Galaxy Rotation with Dark Matter Model
• 52%: Simple Fictitious Solar Systems
• 45%: Stellar Parallax and Aberration Package
• 44%: Eratosthenes JS Model
• 44%: Celestial Sphere with Analemma JS Model
• 42%: Gnomon Model
• 42%: Newton’s Mountain Model
• 42%: Stellar Blackbody Radiation Curves
• 42%: Hertzsprung–Russell (H-R) Diagrams
• 39%: Galileo's Moon Mountain
• 38%: Galileo Sunspots
• 38%: Astronomical Parallax 2D
• 38%: Astronomical Parallax 3D
• 38%: Stellar Aberration 2D
• 38%: Stellar Aberration 3D
• 38%: Parallactic Proper Motion