Origin of Modern Astronomy Vocab Crossword puzzle

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  1. 4. motion The apparent motion of the planets when they appear to move backwards (westward) with respect to the stars from the direction that they move ordinarily.
  2. 6. a long
  3. 9. (384-322 BC) philospher
  4. 12. A model of the universe in which Earth is at the center of the revolving planets and stars.
  5. 13. Nearest point to the earth in the orbit of a heavenly body
  6. 15. eclipse Occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
  7. 23. A model of the solar system in which Earth and the other planets revolve around the sun
  8. 24. The place in the Earth's orbit where Earth is farthest away from the sun.
  9. 26. Isaac Newton Defined the laws of motion and universal gravitation and used them to predict the motion of stars and planets around the sun.
  10. 27. Study of the universe
  11. 28. of the moon the progression of changes in the moon's appearance during the month;
  12. 30. Kepler Assistant to Brahe; used Brahe's data to prove that the earth moved in an elliptical
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  1. 1. eclipse Occurs whenever the Moon passes through the Earth's shadow
  2. 2. farthest point from the earth in the orbit of a heavenly body
  3. 3. Ptolemy ancient Greek astronomer that is known for his theory of an earth-centered universe
  4. 5. CIRCULAR MOVEMENT AROUND AN AXIS
  5. 7. (276-194) An astronomer that is credited with being the first to establish the size of the Earth
  6. 8. Nearest point to the sun in the orbit of a heavenly body
  7. 10. splash marks that radiate outwards from a crater
  8. 11. A large
  9. 14. (310?-250? BCE) Greek scientist who first stated that the Earth revolved around the Sun
  10. 16. A slow motion of Earth's axis that traces out a cone over a period of 26
  11. 17. The curved path of a celestial object or spacecraft around a star
  12. 18. A large round pit caused by the impact of a meteoroid.
  13. 19. Brahe (1546-1601) Established himself as Europe's foremost astronomer of his day; detailed observations of new star of 1572.
  14. 20. Earth's yearlong elliptical orbit around the sun
  15. 21. Copernicus (1473-1543) concluded that the sun is the center of our solar system. Heliocentric Theory or Copernicus Theory. He wrote "On the Revolution of Heavenly Spheres"
  16. 22. Galilei 1564-1642
  17. 25. regolith a thin. gray layer on the surface of the moon
  18. 29. unit The average distance between Earth and the sun
  19. 31. A elongated circle