WHAT IS A MILKY WAY?

Micah MosesThomas MarshallJabarius Jones Ryan SmitheyWHAT IS A MILKY WAY?

The Ptolemaic System The greatest astronomer of the distant past was Ptolemy

Geocentric, an earth-centered universe

Series of concentric spheres

Spheres made of crystal-like substances

Prime mover, line between universe and Heaven

http://www.wwu.edu/skywise/history/ptolemy.jpgCopernicus and KeplerNicholas Copernicus believed in a heliocentric universe, or a sun-centered universe.Johannes Kepler used astronomic dataDiscovered that the orbits were egg-shaped with the sun toward the end of the ellipse instead of the centerShowed the orbits of planets around the sun are not circular

http://ircamera.as.arizona.edu/NatSci102/NatSci102/images/copernicus3.jpg

The New Way of ThinkingRevolutions in mathematicsRenaissance humanist learned Greek and Latin and read work by Ptolemy, Archimedes, and PlatoTechnical problems that required careful observationsNew inventions help new discoveries

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ClipArtGalileo GalileiBelieved in Copernican systemCopernican system contradicted Bible First European to observe the heavens regularlyFound mountains on moonDiscovered 4 moons around Jupiter and sunspotsPublished Starry Messenger in 1610Under suspicion by catholic church

Starry messengerMicrosoft ClipArt

Microsoft ClipArtNewtonBorn in 1642Wrote Mathematical Principles of Natural PhilosophyUniversal Law of Gravitation Defined the 3 Laws of Motion

http://www.quintic.com/education/case_studies/Gravity_19.jpgQuiz Time Part 2 3.What kind of universe did Ptolemy believe in? a. heliocentric b. geocentric c. an earth-centered universe d. both a & c 4. What kind of data did Kepler use? a. survey b. law of motion c. astronomic d. All of the above

Quiz Time part 1What made works by Ptolemy, Archimedes, and Plato accessible?Technical problemsNew revolutions in mathematicsRenaissance humanist learned Greek and LatinNew inventions

What invention helped spread ideas?Printing pressTelescope MicroscopeNone of the above

Quiz Time Part 3 5. A line between the universe and Heaven is called a. The Equator b. The Prime Meridian c. The Line of Demarcation d. The Prime Mover6. ______were central to the Ptolemaic System. a. Orbits b. Planets c. The Prime Mover d. None of the above

Quiz time part 47. What did Galileo Galilei discover?Mountains on the moonSunspotsAll of the above 5 moons around Jupiter

8. What type of universe did Galileo Galilei believe in?Ptolemaic universeCopernican universeHeliocentric B and C

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