Term
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Definition
| the imaginary patterns of stars |
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Term
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Definition
| a device that breaks light into colors and produces an image of the resulting spectrum |
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Term
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Definition
| a star's brightness as seen from earth |
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Term
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Definition
| the brightness the star would have if it were at a standard distance from Earth |
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Definition
| the distance that light travels in one year |
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Term
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Definition
| the apparent change in position of an object when you look at it from different places |
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Term
| Hertzsprung-Russell Diagram |
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Definition
| a graph relating the surface temperature and absolute brightness of stars |
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Term
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Definition
| where most stars are located (a diagonal area) |
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Term
| How are stars classified? |
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Definition
| Stars are classified by their color, temperature, size, composition, and brightness. |
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Term
| How do astronomers measure distances to the stars? |
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Definition
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Term
| What is an H-R diagram and how do astronomers use it? |
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Definition
| They use it to classify stars and to understand how stars change over time. |
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