Astronomy Crossword Midterm

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Across
  1. 2. Model where the sun in at the center of the solar system
  2. 5. Developed the Law of Universal Gravitation
  3. 7. This was earth's first observatory
  4. 8. _____ Radiation travels through space without a physical connection
  5. 11. Model where earth is in the center of the solar system
  6. 12. This telescope can observe Gamma waves
Down
  1. 1. This is a called "light bucket" whose function is to collect light.
  2. 3. Discovered earth's circumference with solstice shadows
  3. 4. Techno Brahe had really good _____
  4. 6. The reason earth has seasons because it is on a ____
  5. 9. Name of the path that the sun takes through the sky
  6. 10. ____ Telescopes have poor angular resolution compared to a refractor