-
240 BCE
Earth's Size
Eratosthenes was the first person to calculate the circumference of the Earth. This helps us calculate the size of other planets. -
140
The Movement Of Planets
Claudius Ptolemy was able to combine what he saw of the stars movements with mathematics to predict the movements of planets. His work enables astronomers to make accurate predictions of planetary positions and solar and lunar eclipses. -
1510
Heliocentric
Nicolaus Copernicus formulated a model of the universe that placed the sun in the centre of it rather than earth. His work changed the layout of the universe. -
Observations
Tycho Brahe was known for his accurate and comprehensive observations. His system correctly saw the moon as orbiting the earth, and the earth as orbiting the sun. His work helped shift the belief to the heliocentric model. -
Kepler's Laws
Kepler discovered planetary motion and that they orbited in an ellipses. His discoveries help determine the orbits of satellites and space stations. -
Gravity
Issac Newton founded the laws of motions, which helped him realize the laws of gravity. These laws help scientists understand more about the motions of the solar system. -
e=mc^2
Albert Einstein founded the theory of relativity and the formula e=mc^2 which foreshadowed. This revolutionized our understanding of space, time, gravity, and the universe.