1 / 13

Scientists ’ Contributions to Our Understanding of the Solar System

Scientists ’ Contributions to Our Understanding of the Solar System. Greek Myths tell about…. A god named Helios , who was “ god of the Sun ” A goddess named Gaea (Gee-a) , AKA “ Mother Earth , “ the protector of Earth and mother of the Titans and humans). The Greeks.

leon
Download Presentation

Scientists ’ Contributions to Our Understanding of the Solar System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Scientists’ Contributions to Our Understanding of the Solar System

  2. Greek Myths tell about… • A god named Helios, who was “god of the Sun” • A goddess named Gaea (Gee-a), AKA “Mother Earth, “ the protector of Earth and mother of the Titans and humans)

  3. The Greeks • Noticed that stars moved in fixed patterns as they seemed to move across sky – except for 5 that seemed to “wander.” • Determined that these 5 were not stars • Gave us the word “planets” which means “wandering stars” • Believed in geocentric system

  4. What does the word ‘geocentric’ mean? Well, if… geo-means of Earth; related to Earth and… -centric means in the center then… geocentric means Earth in the center

  5. Source of photo, which is in public domain: Wikipedia For images of this astronomer, go to: http://www.aip.org/history/esva/catalog/esva/Copernicus_Nicolaus.html CopernicusPolish Astronomer • 1500s • Believed in heliocentric system http://www.bun.kyoto-u.ac.jp/phisci/Gallery/copernicus.html

  6. What does the word ‘heliocentric’ mean? Well, if… helios-means of the sun; related to the sun and… -centric means in the center View an interesting phenomenon in an animation of our heliocentric system: http://www.astro.utoronto.ca/~zhu/ast210/helicentric.html then… heliocentric means sun in the center

  7. What does the word ‘heliocentric’ mean? Well, if… helios-means of the sun; related to the sun and… -centric means in the center View an interesting phenomenon in an animation of our heliocentric system: http://www.astro.utoronto.ca/~zhu/ast210/helicentric.html then… heliocentric means sun in the center

  8. Image of Galileo, which is in public domain: Wikipedia Galileo,Italian Astronomer • 1500s and 1600s • Believed in heliocentric system & supported Copernicus • Improved the telescope to view objects in sky For images of this astronomer and his telescope, go to http://www.aip.org/history/esva/catalog/esva/Galileo_Galilei).html

  9. What did Galileo see in the sky to make him believe in heliocentrism? 1. Venus has phases (like the moon), so it must orbit the sun. 2. The moon has mountains, valleys. It isn’t smooth and perfect. 3. Jupiter has moons, so everything does not orbit around Earth.

  10. 1633 at age 70, Galileo had to recant his findings before the Church - • “must altogether abandon the false opinion that the sun is the center of the world and immovable, and that the earth is not the center of the world, and moves, and that I must not hold, defend, or teach in any way whatsoever, verbally or in writing, the said false doctrine, and after it had been notified to me that the said doctrine was contrary to Holy Scripture.”

  11. Source: Wikipedia/pulic domain Newton,English Scientist • Recognized that two factors keep planets in orbit: • Inertia(1st law of motion) • Gravity Fabulous pictures on this site: http://www-gap.dcs.st-and.ac.uk/~history/PictDisplay/Newton.html

  12. Which kind of solar system do we live in: geocentric or heliocentric? • What did Copernicus believe? • Copernicus was correct, but people didn’t agree with him until someone else found more evidence. Who was this person? What did he discover?

  13. What does “geocentric” mean? Draw and label a diagram of this model of the solar system. • What does “heliocentric” mean? Draw and label a diagram of this model of the solar system. • What did the Greeks believe?

More Related