Astronomers
Published on Nov 20, 2015
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PRESENTATION OUTLINE
ARISTOTLE
- Earth is a sphere
- Earth is smaller than the stars
- Each paint follows its own path
- Asked questions that were later answered
ARISTARCHUS
- Believed stars are stationary
- Placed plan it's in the right order from the sun
PTOLEMY
- Earth is at the center of the universe
- Planets move in epicycles
- Earth moves in an equant
- He created a model that helped us to understand the universe
COPERNICUS
- He believed that the sun is in the center of the universe
- His mayor contribution to science has his heliocentric system
KEPLER
- He believed spheres supporting planets were supported by invisible regular solids
- He discovered that orbits are elliptical
- He learned and shared knowledge about the physical force that moved the planets
GALIEO GALILIE
- He believed that the sun was in the center of the universe
- He believed that the planets orbits are circular in shape
- Galileo invented a new telescope
- He elaborated on the ideas of a heliocentric system
- He also shared his ideas of motion
SIR ISAAK NEWTON
- He discovered gravitational force
- He established the three Universal Laws of Motion
- He proved definitively the heliocentric model first proposed by Copernicus
HUBBLE
- He realized Milky Way is but one of millions of galaxies in a universe that is constantly expanding.
- Hubble became the founder of observational cosmology.
