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Chapter 3 Astronomy
Stars, Galaxies, and the Universe 8th |
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| Longer than the waves of visible light |
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| Most galaxies are moving away from each other which means |
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| The universe is expanding |
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| Units astronomers use to measure distance to stars |
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| Stars with less mass will last longer than |
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| The Electromagnetic Spectrum |
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| All of the different types of electromagnetic waves |
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| A range of colors formed when white light passes through a prism |
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| Used to determine the chemical composition of a star |
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| The distance light travels in a year. |
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| A method used to determine a star's distance from Earth |
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| Born when nuclear fusion starts |
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| All stars begin their lives as part of nebulas |
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| Evidence to support the Big Bang Theory |
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| Most galaxies are moving away from each other |
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| The theory that astronomers have developed to describe the formation of the universe |
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| The force that tends to pull together the matter in stars |
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| The type of light humans can see |
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| The apparant change in position of an object when viewed from two different places |
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| Determines the length of a star's life |
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| The sudden explosion of a dying giant star |
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| When the universe was formed according to The Big Bang Theory |
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| The distance between the crest of one wave and the crest of the next wave |
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