The Cosmic Microwave Background (CMB) from our perspective The CMB defines the size of our observable universe, stretching ~46.5 billon light years across The Milky Way is .003 times as small as the glowing blue dot at the center, which itself is ~230 million light years acrosspic.twitter.com/f6jzgtBpm5
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You have to make a distinction between the universe (independent of us), and the observable universe the part of the universe from which light could reach us (depends on us being coincidentally here and now): Our CMB is what _we_ can see of "surface (3D really) of last scatter"
End of conversation
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Obviously that otherworldly CMB data is a bit hard to get
. But you can just visualise that in every direction you look there is CMB "visible". It would make a fine virtual reality thing (for extra bonus superimpose the night sky)Thanks. Twitter will use this to make your timeline better. UndoUndo
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