Cosmic Dawn Ended 1.1 Billion Years After the Big Bang - Universe Today

Astronomers think they've found a definite end date to the so-called "Cosmic Dawn", the epoch of reionization that followed the Big Bang.

We’re all familiar with the famous opening of the TV show “The Big Bang Theory”. It’s a song that begins with the verse: “The whole Universe was in a hot dense state…” performed by the BareNakedLadie… [+7025 chars]

full article...