Models%20of%20Astronomical%20Phenomena.pptx

For Education purposes

1. Models of Astronomical Phenomena: Copernican, Ptolemaic, and Tychonic

2. Ptolemaic system (Geocentric model) Proponent: Claudius Ptolemy Center of the universe: Earth Orbits: All other celestial bodies revolve around the Earth Stars: The stars are located in the outermost celestial sphere

3. Copernican system (heliocentric model) Proponent: Nicholas Copernicus Center of the universe: Sun Orbits: All planets including Earth revolves around the sun. only the moon revolves around the earth. Stars: The stars are located and fixed in the outermost celestial sphere Planets nearer to the sun revolves faster than those that are from the sun.

4. Tychonic system (geoheliocentric) Proponent: Tycho Brahe Center of the universe: Earth Orbits: The moon and sun revolve around the earth. All other planets revolve around the sun Stars: The stars are located and fixed in the outermost celestial sphere

5. Planets in the Universe

6. Terrestrial Planets ( small and made up of rocks and metals)

7. Gas Giant Planets ( massive size and mass and made up of gas)

8. Answer! Using a ball or a frisbee, how would you explain that the world is round to a flat earther friend?