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star
| Term | Definition |
|---|---|
| Star | A large celestial body that is composed of gas ans that emits light;sun is a typical |
| Apparent magnitude | The brightnes of a star as seen from earth. |
| Luminosity | The actual brightnes of an object such as a star. |
| Absolute magnitude | A measure of how bright a star would be if it were seen from a standard distance. |
| Temperture | A measure of how hot or cold something is; specifically, a measure of the average kinetic energy of the particles in an object. |
| Main-sequence stars | |
| Astronomical-unit | A average distance between earth and the sun |