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Astronomy
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Demonstrations 1  20 of 191
The Interplanetary Magnetic Field (Parker Spiral)
Planar ThreeBody Problem in Phase Space
Universal Sundial
Neighborhoods of Nearby Stars
Geometry of Gregorian Telescope
Ray Diagrams for Microscope and Telescope
Keplerian Orbital Elements
Astronomical Clock
Estimating Planetary Perihelion Precession
Seasonal Variations of Day and Night
Aberration of Light
200 Stars Projected to the Sphere and Platonic Solids
Solar System Mandalas
Mercury's Perihelion Precession
Planar ThreeBody Problem
ThreeBody Problem in 3D
Copernicus's Chord Tables from De Revolutionibus Orbium Coelestium
Ptolemy's Table of Chords
Copernicus's Chord Tables
Solar Time Calculator
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