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abainbridge • yesterday at 1:18 PM • 1 reply • view on HN

We're seeing this galaxy as it was 280 million years after the Big Bang. But the universe didn't become transparent to photons until 100 million years after that (https://en.wikipedia.org/wiki/Recombination_(cosmology)). So that's impossible. Who's wrong, Recombination theory or this paper?

Or have I missed something?

Replies

ben_w • yesterday at 1:24 PM

I think you've mistaken thousands of years for millions.

As per your own link:

  Solving for z_rec gives value around 1100, which converts to a cosmic time value around 400,000 years
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