What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets,...
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![Page 1: What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets, satellites (moons), stars, comets Keeping time = Calendar.](https://reader036.fdocuments.us/reader036/viewer/2022081813/56649ea85503460f94bac22f/html5/thumbnails/1.jpg)
Early Astronomers
![Page 2: What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets, satellites (moons), stars, comets Keeping time = Calendar.](https://reader036.fdocuments.us/reader036/viewer/2022081813/56649ea85503460f94bac22f/html5/thumbnails/2.jpg)
What is the purpose behind Astronomy?Explore the unknown beyond our
atmosphereTrack planets, satellites (moons),
stars, cometsKeeping time = CalendarNavigationAgricultureReligious beliefs
![Page 3: What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets, satellites (moons), stars, comets Keeping time = Calendar.](https://reader036.fdocuments.us/reader036/viewer/2022081813/56649ea85503460f94bac22f/html5/thumbnails/3.jpg)
Claudius PtolemyGreek AstronomerExpanded upon Aristoltes’s theories with mathematical calculationsPtolematic theory
Earth Centered Solar SystemGeocentric
Geo = Earth Centric = middle, center
![Page 5: What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets, satellites (moons), stars, comets Keeping time = Calendar.](https://reader036.fdocuments.us/reader036/viewer/2022081813/56649ea85503460f94bac22f/html5/thumbnails/5.jpg)
Nocilaus Copernicus1543 A.D. Published Heliocentric Theory
Helio = Sun, Centric = MiddleHeliocentric modelTheory was not popular especially with
religious organizations
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Tycho BraheFavored the geocentric modelBrahe Geocentric ModelSun and moon orbit EarthAll other planets orbit the Sun
![Page 7: What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets, satellites (moons), stars, comets Keeping time = Calendar.](https://reader036.fdocuments.us/reader036/viewer/2022081813/56649ea85503460f94bac22f/html5/thumbnails/7.jpg)
Johannes KeplerWorked as Brahe’s assistantFormulated 3 laws of Planetary motion
1st = Orbits are an ellipse2nd = Planets move faster closer to sun3rd p²=a³
Favored Heliocentric ModelSun not exact center of orbits
![Page 8: What is the purpose behind Astronomy? Explore the unknown beyond our atmosphere Track planets, satellites (moons), stars, comets Keeping time = Calendar.](https://reader036.fdocuments.us/reader036/viewer/2022081813/56649ea85503460f94bac22f/html5/thumbnails/8.jpg)
Galileo GalileiUsed telescope to observe celestial
bodiesDiscovered Galilean Moons of
Jupiter, sunspots, physical features on moon
Favored Heliocentric modelUsed phases of Venus to support
model
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Isaac NewtonExplained the force that allows
planets to orbit around the sunThat force is……..Gravity