| The Origin of the CMB |
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| Big |
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| Bang |
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| expansion |
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| cooling |
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| dense |
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| hot |
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| rarified |
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| cool |
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| Now |
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| ionized |
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| foggy |
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| atomic |
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| transparent |
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| we see a glowing |
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| wall of bright fog |
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| hot glowing fog |
| us |
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| orange |
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| light |
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| redshift |
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| z
= 1000 |
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| microwaves |