Geocentric Model. Epicycles & Deferents Galileo’s discoveries Moon has mountains.

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Presentation transcript:

Geocentric Model

Epicycles & Deferents

Galileo’s discoveries Moon has mountains

Galileo’s discoveries Sun has spots

Galileo’s discoveries Saturn has rings

Galileo’s discoveries Milky Way is a collection of stars

Galileo’s discoveries Jupiter has 4 large moons

Galileo’s discoveries Venus experiences phases like Moon

Phases of Venus Geocentric Model –Venus is always found close to the Sun in the sky –Sun & Venus must move along deferents at the same rate –Can never observe “full” Venus

Phases of Venus Heliocentric Model –Venus is always found close to the Sun in the sky –Venus must be an inferior planet

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