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18 Cards in this Set
- Front
- Back
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Claudius Ptolemy
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Suggested the Geocentric Model
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Aristotle
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Proved that the Earth is spherical |
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Eratosthenese
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Measured the Earth's diameter |
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Nicolas Copernicus
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Proposed a Heliocentric model |
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Tycho Brahe
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Collected long-term planetary data |
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Johannes Kepler
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Developed laws of planetary motion |
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Galileo
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Discovered the Moons of Jupiter Proved that planets orbit the Sun |
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Isaac Newton
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Separates light Quantifies gravitation |
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Charles Messier
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cataloged deep sky objects |
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William Herschel
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completed a survey of the entire night sky and named the planet "Uranus" |
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Henrietta Swan Leavitt
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lead measurement of galactic distances |
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Cecilia Payne Gaposchkin
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showed that stars are made of hydrogen |
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Edwin Hubble
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detected the expansion of the universe |
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Clyde Tombaugh
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discovered Pluto in 1930 |
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Karl Jansky
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detected cosmic radio energy |
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Arno Penzias & Robert Wilson
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detected the cosmic microwave radiation left over from the Big Bang |
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Jocelyn Bell
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Discovered the first Pulsar in 1967
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Fritz Zwicky
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Detected Dark Matter |
