Space Crossword! Part Two

3. Certain specific wavelengths within a spectrum shown as lines
4. A star’s total energy output per second
6. The event that may have triggered the expansion of the universe
7. The theory that describes how stars and planets form
9. A small, dim, hot star
10. The small group of galaxies that include our galaxy the Milky Way
11. A form of energy that makes up almost three quarters of the universe that increases the expansion of the universe
12. The surface layer of the sun
14. A massive explosion in which the entire outer portion of a star is blown off
15. An optical instrument that produces a spectrum from a narrow beam of light
18. The process of energy production in which hydrogen nuclei combine to form helium nuclei
20. A graph that compares the properties of stars
22. A star that is so dense that only neutrons can exist in its core
23. An area of strong magnetic fields on the photosphere of the sun
24. A vast cloud of gas and dust
25. The most abundant invisible form of matter in the universe

1. The study of the universe
2. The radiation left over from the big bang
5. A large cluster of 4 to 25 clusters of galaxies
7. A stream of fast moving charged particles produced by the sun
8. A narrow band of stars on the H-R diagram
11. The change in frequency of a light or sound source due to its motion relative to an observer
13. A celestial body made of hot gases
16. A collection of up to 50 to 1000 stars
17. A hot, condensed object at the center of a nebula
19. A huge collection of stars, planets, gas, and dust all held together by gravitational forces
21. A collection of stars held together by gravity