| A | B |
|---|
| star | body of gases, gives off energy |
| rotation | spinning on an axis |
| revolution | traveling around the sun |
| light year | 9.5 trillion km |
| parallax | measures distance between stars and earth |
| apparant magnitude | how bright star appears from earth |
| absolute magnitude | actual brightness of star |
| nebula | first stage of star's life |
| main- sequence | Stage sun is in currently |
| Red Giant | Occurs after main-sequence |
| Black dwarf | final stage for most smaller stars |
| Supernova | exploding star |
| black hole | fianl stage for massive stars |
| Galaxy | Large group of stars |
| Milky Way | Name of our galaxy |
| Spiral | Shape of Milky Way Galaxy |
