Unit 1 - Astronomy

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Across
  1. 3. Gasous planets, many moons, thick atmospheres
  2. 6. the backward motion planets do every year
  3. 7. Solid surfaces, few moons, moderate atmospheres
  4. 8. The Earth wobbles on its axis
  5. 11. Farthest points N and S the sun appears in the sky
  6. 14. Many, Many galaxies come together to make one unit
  7. 16. Study of the universe
  8. 18. The space outside the solar system, full of many particles and ice
Down
  1. 1. Shapes, animals, or objects we can make using the stars
  2. 2. A more sophisticated building used to predict
  3. 4. Probable prehistoric calendar
  4. 5. Also called the North Star
  5. 9. Farthest outside reaches of the universe, an icy mass
  6. 10. small materials that collided together to create the inner planets
  7. 12. Way of measuring in space, around one year equals it
  8. 13. Idea that the Sun is in the middle of the solar system
  9. 15. A collection of planets that all orit a star(s)
  10. 16. Using the stars and planets to help predict the future
  11. 17. Idea that Earth is in the middle of the solar system
  12. 19. when the sun seems precisely over the equator