GENERAL KNOWLEDGE

Detailed explanation-1: -At about one second, neutrinos decouple; these neutrinos form the cosmic neutrino background (CB).

Detailed explanation-2: -Prior to the Big Bang-yes, before the Big Bang-the universe underwent a breathtaking cosmic expansion, doubling in size at least 80 times in a fraction of a second. This rapid inflation, fueled by a mysterious form of energy that permeated empty space itself, left the universe desolate and cold.

Detailed explanation-3: -One second after the Big Bang-The universe was made up of fundamental particles including quarks, electrons, photons and neutrinos.