Across
- 1. graph plotting stars temp and magnitude
- 5. region so dense light can't escape
- 9. shape of our galaxy
- 10. accepted theory how universe formed
- 12. diagonal line on a hr diagram
- 14. surface of the sun
- 15. cloud of gas and dust
- 18. dark spots on the sun
Down
- 2. name of our galaxy
- 3. objects moving away from the earth
- 4. distance light travels in one year
- 6. used a telescope to study the sun
- 7. objects moving toward the earth
- 8. how bright the stars are
- 11. color of coolest stars
- 13. layer of sun most dense
- 16. color of hottest stars
- 17. process our sun uses to turn hydrogen into helium