Term
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Definition
| an imaginary pattern of stars in the night sky |
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Term
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Definition
| an instrument that separates light into colors and makes an image of the resulting spectrum |
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Term
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Definition
| a diagonal area on an H-R diagram that includes more than 90% of all stars |
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Term
| Hertzsprung-Russell diagram |
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Definition
| a graph relating the surface temperatures and absolute brightness of stars |
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Term
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Definition
| the brightness of a star as seen from Earth |
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Term
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Definition
| the brightness a star would have if it were at a standard distance from Earth |
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Term
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Definition
| the apparent change in position of an object when seen from different places |
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Term
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Definition
| the distance that light travels in one year |
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