- #1
vizart
- 18
- 0
This came up when I was trying to explain how we receive light from decoupling era: I know that the CMB we are getting is from some Last Scattering Surface (LSS) and this surface is moving back in time in some sense. But the question is: will there come a time that we are past the decouping era (back in time) and there would be no further ambient CMB in the sky? In other words, will the LSS vanish after a certain point in our past light cone?
Last edited: