Stars an Galaxies crossword

3. the sun is on the edge of the ______?
6. a fairly bright star located within one degree of the north celestial pole
7. when a star runs out of fuel to burn
9. the first stage of a small and medium star
11. compact objects that are created in the core of massive stars
15. a scatter graph of stars showing the relationship between the stars absolute magnitude
20. the galaxy that contains middle aged stars
21. early stage in the evolution of a star
22. the galaxy that contains young stars
23. distance that light travels in a year
24. measurment of brightness

1. a cluster of stars,gas, and dust that are held together by gravity
2. the remnants of very massive stars with gravity so strong not even light can escape it
4. a measure of a stars brightness as seen on Earth
5. stars live out the majority of their lives in a phase called _____?
8. brightness of a star as it would be seen at a standard distance of 10 parsecs
10. the blue white hot core left behind
12. a unit of length equal to the distance of the earth from the sun
13. a old star whose diameter is about 100 times bigger than it originally was and had become cooler.
14. the type of spiral galaxy that the Milky Way is.
16. the galaxy that contains old stars
17. a gigantic cloud of gas and dust from which stars are made
18. The sun is a type of _____?
19. all matter an energy including the Earth an galaxies