character: Galileo Galilei
topic: Observations that transformed astronomical science
LearnActions
SearchCreate
character: Johannes Kepler
topic: Laws of planetary motion and their implications
LearnActions
SearchCreate
character: Nicolaus Copernicus
topic: Heliocentric model of the solar system
LearnActions
SearchCreate
character: Isaac Newton
topic: Laws of motion and gravitational theory
LearnActions
SearchCreate