recombination epoch

2 posts

That humans quest for cosmic dawn

Jan 24, 2026 5 min read

From 'Cosmic dawn: the search for the primordial hydrogen signal', Physics World, November 18, 2025: The EDGES instrument is a dipole antenna, which resembles a ping-pong table with a gap in…

'Surface of last screaming'

May 31, 2021 2 min read

Scicomm Big Bang cosmology last scattering surface phase transition recombination epoch scattering thermal equilibrium

This has nothing to do with anything in the news. I was reading up about the Big Bang for a blog post when I came across this lucid explanation – so good it's worth sharing for that reason alone –…