Across
- 2. an imaginary line around which a planet rotates
- 3. The blue planet
- 5. Each orbit that a planet makes around the sun
- 8. a huge star system that covers many light-years of space
- 11. eclipse occurs when the moon passes through the shadow of the earth
- 14. Planet closest to the sun
- 16. A cloud of dust, gases, and debris in space
- 18. Any object that orbits another object in space
- 20. The sun’s atmosphere
- 21. Dark spots on the photosphere that may be related to solar storms
- 22. The scientific study of the stars
Down
- 1. The surface of the sun
- 4. a group of stars that form a picture in space
- 6. the distance that light travels in one year
- 7. an energy emitted in the form of beautiful colors of light
- 9. Bright clouds of gas on the photosphere
- 10. closest star to Earth
- 12. The planet that rotates sideways
- 13. The Morning Star, the Evening Star
- 14. the red planet
- 15. The outermost part of the sun, “the crown”
- 17. The largest planet
- 19. A star that suddenly flares and becomes brighter