| Flap 1 |
Flap 2 |
| blue star | High mass star that is very hot |
| nebula | Large cloud of dust and gases; beginning stage of all stars |
| supernova | An exploding star; shines very brightly |
| red giant | An older, larger, and cooler star |
| yellow star | Average mass star, like our sun |
| black dwarf | Last stage of an average mass star; the star has used all its energy and has stopped glowing |
| neutron star | The remains of an exploding star; very small and dense |
| black hole | Region in space from the collapse of a massive star; has very strong gravity and no light escapes |
| "A star is born" | When contracting cloud of gases become so hot, nuclear fusion starts; producing heat and light |
| white dwarf | After an older star has expanded and collapsed, what remains is a smaller star that glows faintly |
