![Page 1: Johannes Kepler 1571-1630 “The first astrophysicist and the last scientific astrologer.”](https://reader033.vdocuments.site/reader033/viewer/2022052219/56649d2d5503460f94a03df3/html5/thumbnails/1.jpg)
Johannes Kepler1571-1630
“The first astrophysicist and the last scientific astrologer.”
![Page 2: Johannes Kepler 1571-1630 “The first astrophysicist and the last scientific astrologer.”](https://reader033.vdocuments.site/reader033/viewer/2022052219/56649d2d5503460f94a03df3/html5/thumbnails/2.jpg)
Key Events in Kepler’s
Life1571: Born in Weil der Stadt,
Swabia, Germany
1589-1594: Attended the University of Tübingen
1600-1601: Brief cooperation with Tycho Brahe
1609: Published first two laws of planetary motion
1619: Published third law of planetary motion
1627-1630: Publication of the Rudolphine Tables,
involvement in Thirty Years’ War, and death at
Regensburg, Bavaria, Germany
![Page 3: Johannes Kepler 1571-1630 “The first astrophysicist and the last scientific astrologer.”](https://reader033.vdocuments.site/reader033/viewer/2022052219/56649d2d5503460f94a03df3/html5/thumbnails/3.jpg)
Kepler’s First Model of the Solar
SystemBased on his hypothesis of a geometrically ordered universe
Includes only six planets (Uranus and Neptune not discovered yet)
Accepted by Kepler for many years, until he discovered the planetary laws
![Page 4: Johannes Kepler 1571-1630 “The first astrophysicist and the last scientific astrologer.”](https://reader033.vdocuments.site/reader033/viewer/2022052219/56649d2d5503460f94a03df3/html5/thumbnails/4.jpg)
Kepler’s Laws of Planetary MotionFirst law: “A planet moves in an ellipse, with the sun at one focus”
Second law: “A planet sweeps out equal areas and equal time”
Third law: “The squares of the periods of the planets are proportional to the cubes of their average distances from the sun”
![Page 5: Johannes Kepler 1571-1630 “The first astrophysicist and the last scientific astrologer.”](https://reader033.vdocuments.site/reader033/viewer/2022052219/56649d2d5503460f94a03df3/html5/thumbnails/5.jpg)
Major Works by Kepler
Mysterium Cosmographicum: Published 1596. Outlines his theory of a geometric universe and how it came about
Astronomia Nova: Published 1609. Discourse on Tycho’s data and the results of Kepler’s investigation of Mars’ orbit, significant for its first two laws of planetary motion
Harmonices Mundi: Published 1619. Discusses the third and final law of planetary motion
Rudolphine Tables: Published 1627. Kepler’s last major work is a compilation of his and Tycho’s data in the form of star charts and planetary catalogues, named after Holy Roman Emperor Rudolf II
![Page 6: Johannes Kepler 1571-1630 “The first astrophysicist and the last scientific astrologer.”](https://reader033.vdocuments.site/reader033/viewer/2022052219/56649d2d5503460f94a03df3/html5/thumbnails/6.jpg)
Referenceshttp://www-history.mcs.st-andrews.ac.uk/Biographies/Kepler.html
http://galileo.rice.edu/sci/kepler.html
http://www.hulu.com/watch/63319/cosmos-the-harmony-of-the-worlds