Across
- 1. ___-Mass-Used in astronomy as a standard unit to compare the size of stars to our sun.
- 4. radiation Radiation consisting of electric and magnetic waves that at the speed of light.
- 6. Large clouds of gas ad dust in space.
- 7. A large grouping of stars in space.
- 8. ___-of light-How fast light travels, 3000,000km/sec.
- 9. The death of a large star by explosion.
- 12. ___-waves-Electromagnetic waves with longer wavelengths than visible light.
Down
- 1. ___-Arms-Areas of stars that spread out from the center of a spiral galaxy.
- 2. waves Electromagnetic waves with a shorter wavelength than visible light.
- 3. The distance between any two corresponding points that are adjacent on a wave.
- 5. ___-Shaped Galaxy-A galaxy with a bright center and very little dust or gas.
- 10. All space and the matter space contains.
- 11. ___-waves-Provide us with visible spectrum, the colors we see.
- 13. ___-waves-Elecromagnetic waves with long wavelengths and low frequencies.
- 14. ___-lanes-Brands of dust that appear as dark ribbons against the bright stars in a galaxy.