-
200
Hipparchus (200BC)
he made the first catalogue of the stars -
200
Ptolemy (200AD)
he thought that the earth was the centre of the universe and that everything rotated around it. he claimed that the planets moved in perfect circles. -
270
Aristarchus (270BC)
he said that the planets rotate around the sun and made the heliosentric model. -
350
Aristotle (350BC)
thought that the planetsmoved around on spheres and that there was a prime movier which energised movement in the univers. -
400
Plato (400BC)
claimed that the universe was a perfect shpere with the earth in the middle -
500
Pythagorus (500BC)
he believed that the earth was in motion. thought Earth was unique because it was a central part of our solar system. -
Bruno (1584AD)
he pruposed a non-hierarchical cosmology. -
Kepler (1600AD)
saw that the plaents orbitted the sun at different speeds and that they travelled in and elipses rather than a circle. -
Brahe (1600AD)
realised that if the earth was moving around the sun, then the positions of the stars should change when viewed from different directions.he thought that either the earth didnt move or that the stars were extremely far away. -
Galileo (1609AD)
he discovered the moons of jupiter which supported the heliosentric model -
Newton (1670AD)
finds the law of gravitation. all the planets follow the same laws. he found this by using mathematics. -
Bessel (1900AD)
measured the distance to the stars by parallax. the nearest star was 25 million million miles away. -
Albert Einstein (1915AD)
he published the general theory of relativity.
