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Universe 1
Astronomy 20 1
Galileo
Champion of theCopernican Theory
Astronomy 20 2
Galileo
Galileo Galilei
1564 born in Pisa, Italy 1588-1591 University of Pisa 1591-1610 University of
Padua 1609 makes his first telescope 1610 The Starry Messenger 1633 Trial. 1642 dies in Florence.
Astronomy 20 3
Galileo
5 Discoveries with the Telescope
1) Unseen stars
Universe 2
Astronomy 20 4
Galileo
5 Discoveries with the Telescope
2) Mountains andvalleys on the Moon
Astronomy 20 5
Galileo
5 Discoveries with the Telescope
3) Moons of Jupiter
Astronomy 20 6
Galileo
5 Discoveries with the Telescope
4) Sunspots
Universe 3
Astronomy 20 7
Galileo
5 Discoveries with the Telescope
5) Gibbous phase of Venusgibbous=more than half full
Ruled out the PtolemaicTheory!
Astronomy 20 8
Galileo
The Trial of Galileo 1616 Cardinal Bellarmine
prohibits Galileo fromteaching Copernicus.
1618 Cardinal Barberinibecomes Pope Urban VIII
1632 publication of DialogConcerning Two WorldSystems
1633 arrest and trial
Bellarmine
Barberini
Scheiner
Astronomy 20 9
Galileo
The Trial of Galileo
"Eppur si muove."
Universe 4
Astronomy 20 10
Galileo
The Copernican RevolutionAstronomy
The planets are worlds like theEarth.
The Earth is a planet. The stars are distant Suns.
Astronomy 20 11
Galileo
The Copernican RevolutionPhysics
Aristotle’s Laws of Motion hadto be discarded.
Led to the Law of Gravity. Occam’s Razor became an
established guideline.
Astronomy 20 12
Galileo
The Copernican RevolutionPhilosophy
Aristotle was fallible. Mankind is not the center of
the Universe. The Earth is not inherently evil. Discovery and progress are
possible.
Universe 5
Astronomy 20 13
Galileo
Francis Bacon Call for a New Science
1) Goal of science: betterment ofmankind.
2) Separation of science andreligion.
3) Use of Scientific Method ofexperimentation.
4) Science a collaborative effort.
"No pleasure is comparable to the standing upon the vantage-ground of truth. "