1.
Where Nuclear Fusion begins
2.
90% of all stars are in this stage
3.
The absolute last stage of an average mass star
4.
A star that is running out of fuel; very dense, dim, hot and small
5.
Extremely bright explosion of a high mass star
6.
At the top middle/right of an HR Diagram
7.
Type of galaxy with a bright bulge in the center and pinwheel shaped arms going off of it
8.
Oval shaped galaxy with mostly old stars
9.
Galaxy type that has no definite shape with a lot of young stars
10.
Theory that claims our universe is always expanding; supported by redshift and cosmic background radiation.
11.
Describes what happens when objects move towards us and light waves have higher frequencies and shorter wavelengths
12.
Describes what happens when objects move away from us and light waves have lower frequencies and longer wavelengths
13.
Theory that claims there are other diverse universes existing at the same time as ours
14.
Edwin ______, the scientist who discovered redshift and observed different galaxy types
15.
Where stars are first formed
16.
What galaxies are classified by
17.
Final stage of an extremely high mass star with a gravitational field so strong, not even light can escape
18.
Unit of measurement for long distances in space
