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Space Wasn't Always Black
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Key Facts In This Video
The entire universe used to be a shade of orange. 00:00
CMB stands for cosmic microwave background, which is the static you will receive when you point a dish at any point in the sky. 00:29
As space expands, the wavelengths of free streaming light stretched due to cosmological redshift, which is why the apparent color of the universe changed. 04:28