10. Ptolemy
2nd Century BC
Roman Astronomer
He said that the planets
moved in perfect circles,
attached to perfect
spheres, that all rotated
around the Earth.
15. Copernicus
16th Century AD
Polish Astronomer
Tiring of the
cumbersome and
imprecise nature of the
Ptolemaic Model,
began working on a
theory of his own.
18. Copernicus
Developed a heliocentric model of the universe
- put the sun at the center of the universe
It explained the motions of the planets.
19. Copernicus
Developed a heliocentric model of the universe
- put the sun at the center of the universe
It explained the motions of the planets.
It took the Earth out of it’s spot as the center
of the universe.
20. Copernicus
Developed a heliocentric model of the universe
- put the sun at the center of the universe
It explained the motions of the planets.
It took the Earth out of it’s spot as the center
of the universe.
It expanded the size of the Universe.
23. Tycho Brahe
Born in 1546 in Denmark
Attempted to combine
Ptolemy and Copernicus’
theories.
24. Tycho Brahe
Born in 1546 in Denmark
Attempted to combine
Ptolemy and Copernicus’
theories.
Made some really unique
observations of the
universe that were used
later by his assistant,
Johannes Kepler.
28. Johannes Kepler
Born in 1571 in Germany
Accepted a heliocentric view of
the universe
Used Brahe’s observations to
figure out the elliptical orbits of
the planets.
29. Johannes Kepler
Born in 1571 in Germany
Accepted a heliocentric view of
the universe
Used Brahe’s observations to
figure out the elliptical orbits of
the planets.
Became an imperial
mathematician and astronomer
30. Johannes Kepler
Born in 1571 in Germany
Accepted a heliocentric view of
the universe
Used Brahe’s observations to
figure out the elliptical orbits of
the planets.
Became an imperial
mathematician and astronomer
Developed planetary laws of
motion
34. Galileo Galilei
Lived during the 17th
century in Italy
Developed the first
telescopes
Confirmed that the
universe did revolve
around the sun -
Copernican Theory
37. Galileo Galilei
The Roman Catholic Church determined
he was a heretic
He was place under house arrest
38. Galileo Galilei
The Roman Catholic Church determined
he was a heretic
He was place under house arrest
His book was burned and his sentence
was read in every university
41. Journal Assignment
Most of these men went
against popular thought
during their time.
You have made an amazing
scientific discovery, but it
goes against popular
beliefs. What do you do?
