Across
- 2. who came up with the geocentric theory
- 5. what shape did Kepler discover the planets are in
- 7. what part of the sun has a reddish glow
- 8. what is another name for the northern light
- 9. who came up with the heliocentric theory
- 12. what theory did Ptomley support
Down
- 1. what did the ancient Greeks call wandering stars
- 3. the corona sends out a stream of elictrically churched particles called what
- 4. when loops in sun spot regions suddenly connect
- 6. why are sun spots darker than other parts of the sun
- 10. Who came up with the laws of inertia and gravity
- 11. what is a looping eruption of gas