According to Big Bang Theory, the Universe began about __________ billion years ago. January 28, 2021 / By Preparation Point / Everyday Science Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn 10 – 20 20 – 30 30 – 40 40 – 50 Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn