Across
- 3. the luminous celestial body around which the earth and other planets revolve
- 5. a self-luminous celestial body
- 6. area of a storm that spread out from the center of a spiral galaxy
- 8. a representations of an object
- 9. used in astronomy as a standard unit
- 11. which the sun and solar system are a part
- 12. the hudge grouping of stars that rotate around a center
- 15. the transfer of energy though matter or space
- 16. an object with more than four solar masses squeeezed into a ball
- 17. electromagnetic waves with long wavelengths and low frequencies
Down
- 1. bands of dusk that appears as dark ribbions
- 2. provide us with visible light spectrum, the colors we see
- 4. all space and matter
- 6. how fast light travels
- 7. a large grouping of stars
- 8. the death of a large star by explosion
- 10. where a star is formed
- 13. the distance between any two corresponding
- 14. rotational center of a huge galaxy