PPT-Geocentric Theory Vs. Heliocentric Theory

Problem 1 Planets seemed bright and close at times but dim and far away at other times Ptolemys Answer Eccentric circles This model offended the ancients because the earth was not the center anymore. In 150 A.D., Claudius Ptolemy applied a geometric model to the heavens. Spheres and perfect circles formed the basis of his hypothesis of the planetary movements in a geocentric cosmology. In the 5(325721*(2&(175,&$1'*(2'(7,&'$780639$1,&(. 7(&+1,&$/5(3257 REPORT ON GEOCENTRIC AND GEODETIC DATUMS P. Vanltek Department of Surveying Engineering University of New Copernicus. Why Is He So Important?. Copernicus is responsible for spreading the theory that the Earth revolves around the Sun, not the other way around.. Heliocentric model – the Sun is the center of the Universe. Motions of the Planets. The ancient astronomers believed that the Universe was made up of spheres (orbs). The sphere that contained all of the objects seen in space was the Celestial Sphere. The sphere rotated around the earth making it appear as if all celestial objects were revolving around the earth. In this image you can see the stars and the Sun look as if they’re attached to the sphere Where is the person in the image trying to get to?. Lecture 7. By reading this chapter, you will . learn. 4-1. How ancient astronomers attempted to explain the motions of the planets. 4-2 . What led Copernicus to a Sun-centered model of planetary motion. 1 1 1 A5A:89 :5:A ! !! 564C=0@4=0O :=D5@5=F8O ? A?CB=8:29 =02830F88 ION GNSS 2012 1 7 - 21 A5=BO1@O WHAT IS ASTRONOMY?. Astronomy – the study of the universe. Astronomy? Impossible to understand and madness to investigate.. — Sophocles, c. 420 BCE. Rotation: The turning of the Earth on its own axis. to the Cosmos. Dr. Edward J. Brash. Christopher Newport University. Overview. What is the goal of science?. What methodologies do we use in science?. How has our approach to science changed over the centuries?. Answer. Heliocentric-sun centred. Geocentric-earth cantered.. 2. ) Which is the accepted theory?. a) Heliocentric . b) Geocentric.. Answer. a) Heliocentric-sun centred. 3. ) Galileo proved the heliocentric model to be true by observing . Early Views about the Cosmos. Ancient Views of the Cosmos . Myths. , folklore and legends were used to explain what ancient people observed in the night . sky: . First . Nations people . – believed the night sky was a pattern on a great blanket overhead, which was held up by a spinning ‘world pole’ resting on the chest of a woman named Stone Ribs. . Define Renaissance:. The Renaissance. Reasons for a decline . in feudalism. Reasons for the rise of the Renaissance. Painting and Sculpture. Middle Ages. R. enaissance. Middle Ages. Renaissance. Architecture. How would you explain an image like this in ancient times?. Making a Foldable!. Make a 4 flap foldable!. Label the 4 flaps:. Aristotle. Ptolemy. Copernicus. Galileo. Inside, note as we go . through scientists:. https://www.youtube.com/watch?v=UtOEnTiAZlU. Geocentric Model . The Greek astronomer Ptolemy (c90-168AD) used measurements of the sky to create his . geocentric. model. . A model of the universe in which the stationary earth lies in the center and all other celestial objects orbit it.. Mission Concept Study. Robin Stebbins, Study Scientist. Ninth LISA Symposium. Paris, 22 May 2012. Outline. Goals. Elements of the study. Context of the study. Responses to the Request-For-Information (RFI).