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Sun, Moon, Earth,
How do they work together to help life survive?
Our Solar System
Solar System:• The question for the ages:
Solar System:• The question for the ages:
What is moving around what?
Solar System:• Early Theories:
Solar System:• Early Theories:
– Greeks: Geocentric System (Earth is at the center and the sun and planets revolve around the Earth.
Solar System:• Early Theories:
– Greeks: Geocentric System (Earth is at the center and the sun and planets revolve around the Earth.
– About 140 A.D. Ptolemy: Geocentric model with planets moving on smaller circles.
Ptolemy model:
Solar System:• Early Theories:
– Greeks: Geocentric System (Earth is at the center and the sun and planets revolve around the Earth.
– About 140 A.D. Ptolemy: Geocentric model with planets moving on smaller circles.• Widely accepted for about 1500 years.
Solar System:• Early Theories:
– Greeks: Heliocentric System: Earth and the other planets revolve around the sun.
Solar System:• Early Theories:
– Greeks: Heliocentric System: Earth and the other planets revolve around the sun.
– Copernican Revolution 1543: Nicolaus Copernicus worked out how the planets moved around the sun and in what order.
Copernican Revolution:
Solar System:• Early Theories:
– Greeks: Heliocentric System: Earth and the other planets revolve around the sun.
– Copernican Revolution 1543: Nicolaus Copernicus worked out how the planets moved around the sun and in what order.
– 1610 Galileo: Used a telescope to discover four moons revolving around Jupiter.
Solar System:• Early Theories:
– Greeks: Heliocentric System: Earth and the other planets revolve around the sun.
– Copernican Revolution 1543: Nicolaus Copernicus worked out how the planets moved around the sun and in what order.
– 1610 Galileo: Used a telescope to discover four moons revolving around Jupiter.• Proved Geocentric model was incorrect.
Solar System:• Early Theories:
–Tycho Brahe (late 1500s: Planetary orbits.
Solar System:• Early Theories:
–Tycho Brahe (late 1500s: Planetary orbits.
–Johannes Kepler (early 1600s): Orbit of each planet is an ellipse.
Kepler’s Model:
