26.2 Stars
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Created by:
andrew2070 on January 5, 2012
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11 terms
Terms | Definitions |
|---|---|
 Star | A large, glowing ball of gas in space, which generates energy through nuclear fusion in its core. |
| Light-year | The distance that light travels in a vacuum in a year. |
| Parallax | The apparent change in position of an object with respect to a distant background. |
| Apparent Brightness | The brightness of a star as it appears from Earth. |
| Absolute Brightness | How bright a star really is. |
| Absorption Lines | A set of dark lines that show where light has been absorbed. |
| H-R Diagram | A graph of the surface temperature, or color, and absolute brightness of a sample of stars. |
| Main Sequence | The diagonal band on an H-R diagram. |
| Supergiants | Very bright stars located at the upper right of the H-R diagram. |
| Giants | Large, bright stars that are smaller and fainter than supergiants. |
| White Dwarf | The small, dense remains of a low-mass or medium-mass star. |
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