6 Questions
Who proposed a heliocentric model with the sun at the center?
Copernicus
According to Aristotle, why do heavier objects fall toward the center of the Earth?
It is their natural place
Who is best known for his geocentric model of the universe?
Ptolemy
Who conducted an experiment in 1798 to determine the density of the Earth and the gravitational constant?
Henry Cavendish
Which scientist's observations of stars and planets were the most accurate of his time?
Tycho Brahe
Whose model of the universe was widely accepted for over a thousand years before being replaced by another model?
Ptolemy
Learn about the astronomy theories of Aristotle and Ptolemy. Aristotle believed in the natural state of objects on Earth, while Ptolemy is known for his geocentric model of the universe.
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