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| a group of stars that form a pattern in the night sky that looks like a familiar object |
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| measure of the amount of light a star actully gives off |
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| the measure of the amount of light from a star that is recived on Earth |
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| the distance light travel in one year |
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| lowest level of the sun's atmosphere |
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| layer of the sun's atmoshphere above the photosphere |
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| outermost layer of the suns atmoshpere |
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| area on the sun surface that are cooler and less bright than surrounding areas are caused by the suns magnetic field and occurs an in cycles |
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| a large cloud of gas and dust |
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| late stage in the life of a star |
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| late tage in life of a main sequence star |
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| late stage in the life of a massive star |
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| collaped core of a supernova that can shrink to about 20 km in dimater |
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| final stage of the evolution of massive star |
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| large grop of stars dust a nd gas held together by gravity |
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| states that about 13.7 billion years ago the universe began with a huge firey explosion |
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