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| a group of stars that forms a pattern in the sky that looks like familiar animal or character |
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| Measure of the amount of light a star actually gives off |
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| Measure of the amount of light from a star that is recieved on Earth |
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| Unit representing the distance light travels in one year- about 9.5 trillion km- used to record distances between stars and galaxies |
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| lowest layer of the Sun's atmosphere; givs off light |
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| outermost, largest layer of the Sun's atmosphere |
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| Layer of the Sun's atmosphere above the photosphere |
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| Areas on the Sun's surface that are cooler and less bright than surrounding areas, are caused by the Sun's magnetic field, and occur in cycles |
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| Large cloud of gas dust that contracts under gravitational force and breaks apart into smaller pieces |
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| Late stage in the life cycle of a massive star in which the core heats up, heavy elements form by fusion, and the star expands; can eventually explode to form a supernova |
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| late stage in the life of comparatively low-mass main sequence star in which hydrogen in the core is deleted |
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| Collapsed core of a supernova that can shrink to about 20 km in diamter and contains only neutrons in the dense core |
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| late stage in the life cycle of a comparatively low-mass main sequence star |
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| final stage in the evolution of a very massive star, where the core's mas collapses to a point that it's gravity is so strong that not even light can escape |
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| large group of stars, dust, and gas held together by gravity; can be elliptical, spiral, or irregular |
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| states that about 13.7 billiton years ago, the universe began a huge, fiery explosion |
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| they are Coronal Mass Ejectons |
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| Huge, arching columns of gas |
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| Outward, high speed violent eruptions |
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| the graph of star's sizes and brightness |
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| proposed a theory of how energy is generated |
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| After supernova it changes to |
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| Neutron star or Black Hole |
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| heat that causes atoms to fuse |
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| Spiral, Elliptical, and Irregular |
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| The milky way may contain |
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| THe theory to which time began |
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| another name for the North star |
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