Across
- 2. ___-Mass- an unit that compares the size of other stars with our sun
- 5. all space and the matter space contains
- 7. Radiation- radiation consisting of electric and magnetic
- 10. ___-Shaped Galaxy- has a bright center and little dust
- 12. a large group of stars
- 14. Waves- electromagnetic waves with longer wavelengths than visible light
- 15. Lanes- bands of dust that appear as dark ribbons
Down
- 1. Waves- electromagnetic waves with a shorter wavelength
- 3. the distance between any two corresponding points
- 4. Waves- electromagnetic waves with long wavelengths and low frequencies
- 6. ___-Shaped Galaxy- galaxy with an central bulge
- 8. Rays-electromagnetic waves with very high energy
- 9. a large cloud of gas
- 11. Year- a unit of length
- 13. of Light- how fast light travels
- 16. the planets revolved around it