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