Historic Astronomers
Published on Nov 18, 2015
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PRESENTATION OUTLINE
ASTRONOMERS
SHAPING OUR SOLAR SYSTEM
Aristarchus
HIS IDEAS
- (310-250 B.C.E)
- Greek Mathematician
- Primitive Heliocentric model
- Measured distance to the sun
- Idea not widely accepted
Ptolemy
Photo by Gillian M Lawson
Nicolaus Copernicus
Photo by clockworkimposing
HIS IDEAS
- Greek geographer
- (90-186 A.D)
- Detailed Geocentric model
- Revolutionary "wheels-on-wheels" design
- Explained planet movement
GEOCENTRIC WHEELS ON WHEELS
EARTH CENTERED AND PLANET MOVEMENTS
THE COPERNICUS THEOREM
- Polish astronomer
- (1473-1543)
- Detailed Heliocentric model
- Thought planetary paths were circular
- "Wheels-on-wheels" model
HELIOCENTRIC WHEELS ON WHEELS
SUN IS THE CENTER OF OUR SOLAR SYSTEM
KEPLER'S IDEAS
- German mathemitician
- (1571-1630)
- Planet movement in ellipses
- Kepler's laws
KEPLER'S LAWS OF PLANETARY MOTION
Galileo
HIS IDEAS
- (1564-1642)
- Improved the early telescope
- Supported Heliocentric models
- Observed Venus' phases
- Observed Moon phases
HELIOCENTRIC MODEL
GALILEO'S INTERPRETATION OF THE SOLAR SYSTEM
Isaac Newton
Photo by Stifts- och landsbiblioteket i Skara
NEWTON'S IDEAS
- (1643-1727)
- Discovered the property of gravity on the planets
- Formula to find the mass of Earth
- Discovered how gravity affects celestial bodies
HELIOCENTRIC MODEL
ISAAC NEWTON'S SOLAR SYSTEM MODEL
Edwin Hubble
HUBBLE'S IDEAS
- (1886-1953)
- Galaxy classification
- "Regular" or "Irregular" galaxies
- Telescope named after him
WHO BELIEVED THIS?
- Aristotle
- Ptolemy
WHO BELIEVED THIS?
- Aristarchus
- Copernicus
- Kepler
- Galileo
- Isaac Newton & Hubble
