-
200
Pythagoras ( 570-490 BC)
-He believed that everything can be predicted through math -Pythagoras was famous as an expert on the fate of the soul after death, who thought that the soul was immortal and went through a series of reincarnations. Sources http://plato.stanford.edu/entries/pythagoras/ -
200
Ancient Greek Astronomy (648BC)
-They Knew that the the moon and the earth are spherical -Grouped the stars into constellations – different cultures had different constellations, although there were some similarities Sources http://www.astunit.com/tutorials/greek.htm -
200
Aristotle (384-322 BC)
- Aristotle followed prior Greek philosophy with an adapted theory of elements.
-
200
Aristarchus of Samos (310-230 BC)
-He was the first to formulate plainly the heliocentric theory, the scheme which has the Sun in the center. -He calculated the diameter of the Sun as about seven times the diameter of the Earth Sources http://www.varchive.org/ce/orbit/arisam.htm -
200
Eratosthenes (276-196 BC
-Eratosthenes measured the circumference of the Earth -He devised a map system based on latitude and longitude lines Sources http://www.juliantrubin.com/bigten/eratosthenes.html -
200
Hipparchus (190-120BC)
-Hipparchus measured the distance from the Earth to the Moon during a solar eclipse that was a total eclipse at Syene and a partial eclipse at Alexandria. -He measured the precession of the Earth's rotation axis. Sources http://www.astro.cornell.edu/academics/courses/astro201/hipparchus.htm -
Jan 1, 1473
Copernicus (1473-1543)
-Started the "Copernican Revolution" -He was a mathematician and astronomer who proposed that the sun was stationary in the center of the universe and the earth revolved around it Sources http://plato.stanford.edu/entries/copernicus/
http://plato.stanford.edu/entries/copernicus/ -
Jan 1, 1546
Tycho Brahe (1546-1601)
-Discovered the Supernova -Tycho is credited with the most accurate astronomical observations of his time Sources http://en.wikipedia.org/wiki/Tycho_Brahe -
Jan 1, 1564
Galileo Galilei (1564-1642)
-Invented the telescope -Discovered "4 new plants" -observed sun spots Sources http://www.crystalinks.com/galileo.html -
Jan 1, 1571
Johannes Kepler (1571-1630)
-Came up with three laws of planetary Motion -He was the founder of "celestial mechanics", having been the first to explain planetary motion Sources http://www.johanneskepler.com/ -
Isaac Newton (1643-1727)
-Three Laws of motion -First to built a relfecting telescope
Sources
http://www.pbs.org/wnet/hawking/cosmostar/html/cstars_newt.html -
Annie Jump Cannon (1863-1941)
-She specialized in classifying stars -Pickering conceived the Henry Draper Memorial as a long-term project to obtain optical spectra of as many stars as possible and to index and classify stars by their spectra. Sources http://www.sdsc.edu/ScienceWomen/cannon.html -
George Hale (1868-1938)
-Studied the Sun -he invented the spectroheliograph Sources http://www.mwoa.org/hale.html -
Henrietta Swan Leavitt (1868-1921)
- Discovered the period of luminosit of cephids.
Sources
http://www.nndb.com/people/047/000170534/ -
Albert Einstein (1879-1955)
-Theory of relativity -Discovered the Electro-magnetic spectrum
- Won noble prize
Sources
http://en.wikipedia.org/wiki/Albert_Einstein -
Edwin Hubble (1889-1953)
-The Hubble law: Galaxies in the Universe are moving towards or away from us. -The Hubble Space Telescope was named after him .
Sources
http://hubblesite.org/the_telescope/hubble_essentials/edwin_hubble.php -
Gerald Kuiper (1905-1973)
-He discovered the Moon of Neptune. -He discovered carbon dioxide in the atmosphere of Mars and the existence of a methane-laced atmosphere above Saturn's satellite Titan in 1944
Sources
http://en.wikipedia.org/wiki/Gerard_Kuiper -
Bengt Georg Daniel Stromgren (1908-1987)
-Theorized that there are gas clouds in space- Swedish astronomer who did important research in stellar structure in the 1930s but is best known for his work on ionized gas clouds – H II regions – around hot stars. Sources http://www.daviddarling.info/encyclopedia/S/Stromgren.html
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Subrahmanyan Chandrasekhar (1910-1995)
- Won Noble prize for evolution of stars.
Sources
http://nobelprize.org/nobel_prizes/physics/laureates/1983/chandrasekhar-autobio.html -
Grote Reber (1911-2002)
- First to develope radio telescope.
Sources
http://www.nrao.edu/whatisra/hist_reber.shtml -
James Van Allen (1914-2006)
-Van Allen radiation belt -Van Allen was involved in the first four Explorer probes, the first Pioneers, several Mariner efforts, and the orbiting geophysical observatory.
Sources
http://history.nasa.gov/sputnik/vanallen.html -
Sir Fred Hoyle (1915-2001)
-Thought there's life in the Universe other than Earth -He has held the position of Plumian Professor of Astronomy at Cambridge University sourcee http://www.coseti.org/hoyle.htm -
E. Margaret Burbidge (1919)
- Leader to end woman discrimination in astronomy
Source
http://www.nndb.com/people/692/000168188/ -
Eugene Shoemaker (1928-1997)
- Eugene Shoemaker was a member of the Board of Directors of The Spaceguard Foundation,
Sources
http://www.romesg.com/?p=624
http://www2.jpl.nasa.gov/sl9/news81.html -
Thomas Mutch (1931-1980)
-He authored two books, "The Geology of the Moon: Startigraphic View", and, with several colleagues, "The Geology of Mars." -Tim also led the Lander Imaging Team from the Viking Mission to Mars.
Source
http://www.brown.edu/Departments/Geology/colloquia/mutch.html
