The Cold Big Bang by explosion of the Big Crunch String Black Hole followed by Herbig Haro star heating.,
How did our universe begin?,
The hot Cosmic Background (CMB) seems to be created by new star creation ( Herbig Haro systems) between two equal sized (15%) (new physics) expelled trapped horizon black holes after a cold big bang black hole explosion, observable as two Bowshocks outside older Nebula.
Each black hole seems equipped with a Penrose proposed trapped space collider horizon together with fermion creation and repulsion (Q-FFF Model) forming a plasma disc and stars between jets.
see:https://www.academia.edu/45600283/The_Cold_Big_Bang_by_explosion_of_the_Big_Crunch_String_Black_Hole_with_Herbig_Haro_heating