Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of...

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Observing the Solar System

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Transcript of Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of...

Page 1: Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of the universe. This is known as a geocentric system.

Observing the Solar System

Page 2: Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of the universe. This is known as a geocentric system.

Greek Observations• Greek astronomers believed Earth to be the

center of the universe. This is known as a geocentric system.

Page 3: Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of the universe. This is known as a geocentric system.

The Copernican Revolution

• Copernicus thought that the sun is at the center of the system of planets. This system is called a heliocentric system.

Page 4: Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of the universe. This is known as a geocentric system.

Galileo's Evidence

• Galileo Galilei used the newly invented telescope to make discoveries that supported the heliocentric model.– Galileo saw 4 moons revolving around Jupiter,

proving not everything revolves around Earth.– Galileo saw Venus go through a series of

phases, which wouldn’t happen if it only circled around Earth.

Page 5: Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of the universe. This is known as a geocentric system.

Kepler’s Calculations

• Kepler, who was once the assistant to a successful astronomer that died before their research was complete, had concluded from his calculations that the orbit of each planet is an ellipse instead of a perfect circle.

Page 6: Observing the Solar System. Greek Observations Greek astronomers believed Earth to be the center of the universe. This is known as a geocentric system.

Modern Discoveries

• Since Galileo’s time, we have discovered Uranus, Neptune, and Pluto (which is no longer a planet).

• Today we know that the solar system consists of the sun, the planets and their moons, and several kinds of smaller objects that revolves around the sun.


Heliocentric vs Geocentric models

Heliocentric vs Geocentric models

GEOCENTRIC DATUM GDM2000 FOR MALAYSIA ...

GEOCENTRIC DATUM GDM2000 FOR MALAYSIA ...

Martin D. Weinberg UMass Astronomy weinberg@astro.umassweinberg/a100/lectures/... · 2012. 9. 11. · Greek cosmology Celestial sphere Ptolemy Geocentric theory Distance to Sun Size

Martin D. Weinberg UMass Astronomy [email protected]/a100/lectures/... · 2012. 9. 11. · Greek cosmology Celestial sphere Ptolemy Geocentric theory Distance to Sun Size

The Origin of the Universe NGC 2207, NGC 2163. A Brief History of Ancient Cosmology Babylonian Sky Dome Greek/Roman god Atlas Aristotle’s Geocentric Universe.

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Geocentric Theory

Geocentric Theory

FAMOUS ASTRONOMERS Believed in geocentric universe earth was the center used circular orbits with epicycles was supported by the church for.

FAMOUS ASTRONOMERS Believed in geocentric universe earth was the center used circular orbits with epicycles was supported by the church for.

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HELIOCENTRIC GEOCENTRIC

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The “Geocentric Model” Aristotle vs. Aristarchus (3 rd century B.C.): Aristotle: Sun, Moon, Planets and Stars rotate around fixed Earth. Ancient Greek.

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Early Astronomers

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The Heliocentric Theory. Background: Geocentric Theory Geocentric Theory: that the earth is the center of the solar system (and universe) Geocentric theory.

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Solar system vocab. geocentric system Ptolemy – 140 A.D. Greek Astronomer believed that Earth was the center of the universe.

Solar system vocab. geocentric system Ptolemy – 140 A.D. Greek Astronomer believed that Earth was the center of the universe.

Astronomy In the beginning. Pre-test True or False: True or False: 1) Greek Astronomers (600BC-150AD) used telescopes to observe stars. 1) Greek Astronomers.

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Heliocentric vs Geocentric

Heliocentric vs Geocentric

Early Western people believed that the Earth was the center of the universe. That is called a geocentric system. Ptolemy, a Greek astronomer believed that.

Early Western people believed that the Earth was the center of the universe. That is called a geocentric system. Ptolemy, a Greek astronomer believed that.

Astronomers Royal

Astronomers Royal

Venus Transit 2004: Activities organized by Greek Amateur Astronomers Fiori-Anastasia Metallinou University of Thessaloniki Department of Physics Section.

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