astro physics

2. A massive star at least 8 times the mass of our sun explodes in a _________
6. Always in the cores of stars and atoms are getting fused together to make new ones this is called _____________
7. The most abundant element in the universe
9. A white dwarf that has shed all of its layers and now is not giving off any more energy
10. A not fully complete star and is not as hot as a normal star but still has a core
12. A massive star about 315 times larger than the sun
14. Big crunch
15. A dead star that used to be the size of our sun
17. A blackhole that is eating the things around it and shooting out matter through the top
18. A fast spinning neutron star that emmits radio active energy

1. A big black hole that is usually in the middle of all galaxies.
3. When 2 neutron stars collide
4. A "dead" star and it is so dense that light can't even escape.
5. Stars, astroids and other things that are swirled around to form an illiptical, irrgular,barr,or spiral ______
8. A star that is in its late stages of life, glows a red like embers of a fire
11. A nursery for stars, often caused by star's outer layers being blown off
13. A used to be big star that if it was a little bit denser, it would be a black hole.
16. Second most abundant element in the universe