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12 Cards in this Set
- Front
- Back
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Absolute Magnitude |
brightness of star as seenfrom 32. 6 light years from the earth |
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Apparent magnitude |
brightness of star as seen fromearth |
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Circumpolar |
any star always visible inthe night sky |
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Constellation |
Pattern of stars |
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H-R Diagram |
shows the relationship between surface temperature and theabsolute magnitude of a star |
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Light-year |
Distance light travels in one year |
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Main-sequence star-- |
stars that run through themiddle of the H-R diagram |
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Neutron star-- |
collapsed core of a supernova that is very dense, 100million tons per spoonful of matter |
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Parallax |
Method of determining thedistance from the earth to the a star based on the shift in apparent positionof the star when viewed from different angles |
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Pulsar |
a spinning neutron starthat emits two beams of radiation across space |
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Red-Shift |
apparent lengthening of thelight waves emitted by a star moving away from the earth |
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Star |
body of gases that givesoff tremendous amount of radiant energy in the form of light and heat |
