Galileo Galilei
Sidereus Nuncius
Starry Messenger
Galileo: positions
- Born in Pisa (Florence)
- Studied medicine at University of Pisa
- University Chair of Mathematics, Pisa
- University of Padua (Venice)
- Court Mathematician and Philosopher, Florence
Galileo: publications
- 1610 Starry Messenger
- 1615 ** warning **
- 1632 Dialogue on the Great World Systems
- 1633 ** trial **
- 1638 Discourses and Mathematical Demonstrations concerning
Two New Sciences Pertaining to Mechanics and Local Motion (physics)
Galileo and the telescope
- telescope invented in Holland
- Galileo heard about it in 1609 and built one for himself
- makes major discoveries with his instrument
- discoveries reported in Starry Messenger
Galileo's discoveries with the telescope
![](sunspots.gif)
spots on the Sun
![](craters.gif)
mountains and "seas" on the moon
![](milkyway.gif)
the Milky Way consists of lots of stars
![](saturnbulges.gif)
Saturn has bulges
![](venusphases.gif)
Venus has phases
![](jupitermoons.gif)
Jupiter has moons
ASTR 121 Home
Davison E. Soper, Institute of Theoretical Science,
University of Oregon, Eugene OR 97403 USA
soper@bovine.uoregon.edu