1. Astronomers Throughout History

2. Strongly supported GEOCENTRISM
Aristotle
(384 – 322 BC, Greece)
Strongly supported GEOCENTRISM
Earth
Earth

3. Made a list of 48 constellations
Ptolemy (after 85 AD-165 AD, Italian )
Developed math to predict the motions of other planets, the distance to the sun, and solar and lunar eclipses.
Made a list of 48 constellations

4. Copernicus (1473-1543, Poland) Heliocentric Model of the Solar System.
Sun
Be sure to emphasize the HUGE amount of time that has lapsed between Copernicus and Ptolemy.
Heliocentric Model of the Solar System.

5. Galileo Galilei
( , Italy)
Spent the last years of his life under house arrest on orders of the Catholic Church’s Inquisition. This was all because Galileo supported Heliocentrism.
Improved the telescope
Discovered Jupiter’s four largest moons

6. Kepler ( , Germany)
Developed Math to describe the motion of the planets.
We still use his math today!

7. This proved heliocentrism once and for all.
Sir Isaac Newton
( , England)
Showed that the motions of Earth and of other Celestial Bodies are governed by THE SAME LAWS of gravitation.
Invented the reflecting telescope
Developed a theory on color based on what he saw from a prism.
This proved heliocentrism once and for all.

8. stellar classification.
Annie Jump Cannon
(1863 – 1941, USA)
was instrumental in
the development of
contemporary
stellar classification.

9. Henrietta Leavitt catalogued thousands of
variable stars in images of the
Magellanic Clouds
Theory: 'Period-luminosity relationship’
which became an important way
of measuring distances in the Universe.

10. Einstein Formulated the Theory of Relativity which revolutionized
(1879 – 1955, Germany & USA
Formulated the Theory of
Relativity which revolutionized
modern astrophysics,
Theories of Motione
Theories of Magnetism
Theories of Gravitation

11. Hubble played a crucial role in establishing the field of
(1889 – 1953)
played a crucial role in
establishing the field of
extragalactic astronomy
and is generally regarded
as one of the most important
observational cosmologists
of the 20th century.
Hubble Telescope