| A | B |
|---|
| Galaxy | A massive collection of stars, gas and dust held together by gravity in space. |
| Big Bang Theory | The current accepted thought of how the universe began. |
| Constellation | A collection of stars that resemble objects, animals or mythological characters. |
| Absolute Magnitude | The measure of the amount of light a star is actually giving off. |
| Apparent Magnitude | The measure of the amount of light received on earth from a star. |
| Binay System | Two stars orbiting each other in space. |
| Black Hole | The final stage in the cycle of evolution of only the most massive of stars after a supernova. |
| Neutron Star | The final stage in the cycle of evolution of some of the stars after a supernova. |
| Super Giant | A late stage in the cycle of evolution of most stars where the heavy elements are being fused. |
| White Dwarf | The final stage in the cycle of evolution of most of the stars in the universe. |
| Parallax | The apparent shift in position of an object when view from two different locations. |
| Light-Year | A unit of measurement used to measure distances in space. |
| Nebula | A massive collection of gas and dust held together by gravity in space where stars begin. |
| Doppler Shift | The change in wavelength that occurs as a source of energy moves. |
| Red Shift | The change in wavelength of light as the source moves away from your location. |
| Blue Shift | The change in wavelength of light as the source moves closer to your location. |
| H-R Diagram | A chart that is used to display the relationship between the temperature and magnitude of stars. |
| Supernova | The violent eruption of energy of only the most massive of stars. |
