Ideas About The Solar System Flashcards
1
Q
how long have people believed that the sun is the centre of the universe
A
500 years
2
Q
what did early ideas say about the solar system
A
Earth at the centre of the Solar System, with the Sun, the planets and the stars moving in circular orbits around the Earth
3
Q
what did Copernicus say about the solar system
A
Copernicus suggested that the Sun was at the centre of the Solar System, but his model still had
the planets moving in circular orbits.
4
Q
what did Kepler suggest about the solar system
A
Kepler suggested that the planets actually move in elliptical orbits around the Sun. His model
could be used to make very accurate predictions.
