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| a device built to observe distant objects by making them appear closer |
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Definition
| an imaginary pattern of stars in the sky |
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Definition
| the distance that light travels in one year, about 9.5 million million kilometers |
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| a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity |
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Definition
| a galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern |
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Definition
| a galaxy shaped like a round or flattened ball, generally ball, containing only old stars |
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Definition
| a galaxy that does not have a regular shape |
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Definition
| all of space and everything in it |
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Definition
| the initial explosion that resulted in the formation and expansion of the universe |
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Definition
| the brilliant explosion of a dying super-giant star |
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