Clone of Big Bang Theory, Heliocentric, and Geocentric

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Across
  1. 2. In Greek, ______ means Earth.
  2. 4. There are _________ of galaxies in the universe.
  3. 7. What theory is the most accepted universe formation theory?
  4. 14. this is an explanation or model backed by results from many tests.
  5. 17. He developed an early uniform circular model of motion.
  6. 18. Copernicus and Galileo believed in the __________ model of the solar system.
  7. 19. In Greek, _______ means Sun.
  8. 20. What famous astronomer announced that galaxies are moving away from each other in 1929?
Down
  1. 1. Galileo observed what planet went through phases?
  2. 3. The universe includes living things, planets,stars, galaxies, dust clouds,light and even ________.
  3. 5. What analogy do astronomers use to demonstrate the expanding universe?
  4. 6. Astronomers say that the galaxies and stars are still moving ________ from each other.
  5. 8. Who was put on house arrest by the church because he believed in the Heliocentric model?
  6. 9. The Big Bang happened between ten and ___________ billion years ago. (HINT: spell out the number)
  7. 10. He agreed with Aristotle and added mathematics to prove his theory.
  8. 11. He advanced the theory that the Earth and other planets revolve around the Sun.
  9. 12. Aristotle and Ptolemy believed in the _________ model of the solar system.
  10. 13. The space between galaxies is ________.
  11. 15. What force helped galaxies and planets form after the Big Bang?
  12. 16. He is thought of as the founder of modern science.