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10 Cards in this Set
- Front
- Back
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Polish astronomer who proposed a heliocentric system of the universe |
Nicolaus Copernicus |
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scientist who discovered the law of the universal gravitation |
Sir Isaac Newton |
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astronomer whose book Almagest mathematically described the geocentric view of the universe |
Ptolemy |
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astronomer who discovered that the planets do not travel in circles |
Johannes Kepler |
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astronomer whose discovery of the phases of Venus helped prove the heliocentric view |
Galileo Galilei |
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The study of God's creation beyond our atmosphere is __?__. |
astronomy |
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The force of attraction that exists between any two objects is __?__. |
gravity |
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The general term for a space that does not contain any matter is a __?__. |
vacuum |
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The point in a planet's orbit that is farthest from the sun is called __?__. |
aphelion |
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The sun, planets, and planets' moons, and other smaller bodies that orbit the sun form the __?__. |
solar system |
