Contributions of Aristotle, Aristarchus, Ptolemy, Copernicus, Brahe, Kepler, Galileo, Newton, and Einstein to Astronomy
Classified in Physics
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Aristotle:
- Proved that the Earth is spherical
- Believed that it was at the center of the universe
Aristarchus:
- First to say that the Sun, and not the Earth, was the center of our universe
- Used simple geometry to estimate the size of the sun and moon and their relative distance
Ptolemy:
- Made a model called the Ptolemaic system
- Concluded all astronomical objects move at constant speeds in circular orbits
- Built his model to fit this idea
- The Ptolemaic model is one of the longest upheld scientific theories in history: it was the cornerstone of astronomy for 1,500 years
Copernicus:
- Concluded that the Sun was the center of the universe instead of the Earth
- Heliocentric
Brahe:
- Made super precise instruments for observing space before the telescope was created
- Believed