Ancient Astronomy 

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19 Terms

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Johannes Kepler

- tried to figure out how the planets move.

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Galileo

- Very experimental and held lots experiments.

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brightness of stars

They defined the position and and had very close to accurate distance down (Hipparchus 150 BC)

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Dynamics

describes WHY the motion occurs- Newtons Laws.

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Tycho Brahe

- Scientist, knew the king of Poland who gave him an island.

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Friction

is a force.

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Venus

He (Galileo) observed the phases of , applied laws of motion to astronomy, observed the 4 largest moons of Jupiter, observed sunspots and analyzed them, and observed the rings of Saturn.

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entire electromagnetic spectrum

The light collected can range over the .

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Aristarchus of Samos

(260 BC) suggested that the earth WAS NOT the center of the solar system due to observers not being able to observe any stellar parallax.

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Kinematics

describes HOW the motion changes given an initial set of conditions- kinematic equations.

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Telescopes

that focus visible light are called optical telescopes.

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Constellations

are patterns in the sky.

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Tycho Brahe

Scientist, knew the king of Poland who gave him an island

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Johannes Kepler

tried to figure out how the planets move

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Galileo

Very experimental and held lots experiments

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Celestial Sphere

sphere of stars

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Celestial Poles

The extension of the earths axis to where it crosses the celestial

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  • Kinematics describes HOW the motion changes given an initial set of conditions

kinematic equations

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Dynamics describes WHY the motion occurs

Newtons Laws