1
third stage of a star
2
border of the blackholes
3
what indicates the color of a star
4
a group of stars that is smaller than a galaxy
5
second stage of a star
6
what do supermassive/massive stars create after a supernova
7
In how many years will our sun become a red giant
8
areas of dust and gases in galaxies
9
stars that are extremely small, hot, and dense
10
large goup of billions of stars in empty space
11
what galaxy do we live in
12
what age are spiral galaxies
13
first stage of a star
14
what comes first; the white or black dwarf
15
a massive ball of plasma
