8 ms·
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 tha
by abainbridge 7mo ago
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) https://en.wikipedia.org/wiki/Recombination_(cosmology)). So that's impossible. Who's wrong, Recombination theory or this paper?
Or have I missed something?
- ben_w 7mo agoI 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
- abainbridge 7mo agoDoh. Thanks.
- magicalhippo 7mo agoIf it makes you feel any better I had the same exact reaction as you and almost posted the same thing, but managed to catch my error just in time.