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From The Sun’s Perspective:

Published byBaldric Thomas Modified over 6 years ago

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Presentation on theme: "From The Sun’s Perspective:"— Presentation transcript:

1 From The Sun’s Perspective:
Aristarchus Occam’s Razor The Copernican Theory Giordano Bruno Brahe and Kepler Kepler’s 3 Laws of Planetary Motion

2 THE HELIOCENTRIC SYSTEM OF ARISTARCHUS
We have no written record of this system by Aristarchus himself. --all his works (except the one mentioned above) were lost when the library in Alexandria was burned. Written accounts of this system are found in "The Sand Reckoner" by Archimedes ( BC) and "On the Face of the Moon Disc" by Plutarch ( AD). Features: 1. Planets orbit the sun, explaining retrograde motion 2. stellar parallax not seen because stars are at great distance.

3 William of Occam ~1200 AD OCCAM’S RAZOR—a simpler workable theory is a better one.

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8 Giordano Bruno--burned at stake in 1590
--Universe is infinite! --Stars are suns with planets and beings on them.

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11 Brahe’s Observatory at Uraniborg, Denmark

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14 Geometry of the Ellipse

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17 Planetary orbit eccentricities
Mercury .206 Venus .0068 Earth .0167 Mars .0934 Jupiter .0485 Saturn .0556 Uranus .0472 Neptune .0086 Pluto .25

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