| A | B |
|---|
| Black Dwarf | What a medium mass star becomes at the end of its life |
| White Dwarf | Star left at the core of a planetary nebula |
| Nebula | A large cloud of gas or dust in space |
| Protostar | The earliest stage of a star's life |
| Supernova | A red super giant star explodes |
| Neutron Star | The remains of a high mass star |
| Black Hole | Exerts such a strong gravitational pull that no light escapes |
