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| A system of billions of stars gases and dust. |
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| Brilliants object in space that may be the powerhouse of devleoping. |
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| Cloud of gas and dust in space. |
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| A star that has swelled and glows with a red color. |
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Definition
| The explostion of a star releasing huge amounts of light and other energy. |
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| An invisabal object in space whose mass and gravitional force is so great that not even light can excape. |
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Definition
| the idea that the universe had a huge explosion about 15 billion years ago. |
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Definition
| the change of light waves from retreating object to the red end of the spectrum. |
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