| A | B |
| Sun | Our star, 99% of the matter in the solar system, medium size |
| Corona | outer atmosphere and hottest layer of the suns atmosphere |
| Chromosphere | Middle layer of the sun's atmosphere |
| Photosphere | Inner layer of the sun's atmosphere, also the surface of the sun where we see sunspots. Temperature 6000 C |
| Core | Inner layer of the sun where fusion occurs |
| Fusion | The nuclear process whereby atoms of one element are fused into new elements. High heat and pressure |
| Solar Flare | A violent magnetic storm. Matter extends straight out from the sun. |
| Prominence | A burst of light from the sun that forms an arc on the sun's surface |
| CME | Coronal Mass Ejection - Matter is ejected from the sun |
| Radiation | Matter that come from the sun |
| Solar wind | Stream of particles (radiation) from the sun |
| Magnetosphere | magnetic field that surrounds the earth protecting us from the sun's radiation |
| Sunspots | Darker areas on the suns photosphere/surface that are cooler than the surrounding area |
| Supergiant | Largest type of star 100X larger or more than our sun |
| Giant | 2nd Largest type of star 4-100X larger or more than our sun |
| Main Sequence Star | Medium or avg. size star. Our Sun is this size |
| Neutron Star | A dying star, what a Giant star will become when it dies. They are the smallest size star |
| White Dwarf Star | A dying star. What Main Sequence stars become when they are dying. |
| Black Dwarf | When the White Dwarf's energy is completly gone it will become a Black Dwarf |
| Black Hole | Are in space of immense gravittaional pull. Where all matter is pulled into, even light |
| Hertzsprung-Russell Diagram | Chart that compares the temperature of a star to its absolute brightness. Stars to the top left are the brightest |
| Apparent Brightness | Brightness of a star as viewed from earth |
| Absolute Brightness | The actual mathematical brightness of a star when stars are compared as if they were at the same distance form us |
| Parallax | The amount of apparent shift of an object when view from 2 different locations. It can tell us the distance of a star up to 100 Light years away. |
| Constellation | A group of stars that forms and imaginary image. |
| Asterism | A part of a constellation. Big and Little dippers are 2 examples. |
| Polaris | North star |
| Sirius | Bright star in the night sky |
| Big Dipper | Used to find the N. Star - Polaris |