Questions with the keyword 'big bang'

• how long did the big bang last for by rockyali22 and 1 other. to Roisin, Gavin, Karen, Mark, Michel Comments: (No comments so far )
• How did the universe start? If the answer is the big bang how did the big bang happen if there was nothing there before by Aoife. to Mark Comments: (so far, 2s comments )