Across
- 4. Bottom of wave
- 6. Cloud of gas and dust from which stars form
- 8. How bright an object looks at a constant distance
- 9. Light you can see
- 10. Distance between waves
- 11. Galaxy with a spiral shape
Down
- 1. Galaxy with no shape
- 2. Galaxy with an oval shape
- 3. How bright an object looks from Earth
- 5. Top of wave
- 7. Groups of stars that form pictures