Astronomy Crossword

1. Dark and cool spots on photosphere
3. Stars begin as cloud of dust and gas
8. Actual or true brightness of a star
9. Earth's pull on objects toward the center of the planet
11. How bright the star appears to an observer on Earth
12. Distance between the earth and sun
13. Outbursts of light that occur in areas of sunspot activity
14. The idea of matter and energy compressed into a single dense point that exploded into an ever expanding universe
15. Nuclear Reaction
16. AFter main sequence and a smaller star
17. Shows how fast galaxies are moving away from one another
19. Distance light travels in one year
20. After red giant

2. A different star after hydrogen runs out and is the outcome of a bigger star
4. Lumonosity of stars as if they were seen from the same distance from the Earth
5. System containing millions of billions of stars that orbits a common mass and travel as a unit
6. Second densest object in universe
7. Increased blasts that interfere with radio and T.V reception
10. After smaller nova shrink
14. Most dense object in whole universe
18. Outer layer of atmosphere