…energy), two photons in the early Universe can create anything they posses enough energy to create. By extrapolating backwards from what we have now, we can conclude that within the observable Universe shortly after the Big Bang, there were some 1089 particle-antiparticle pairs at that time.Science uncovers the origin of the first light in the Universe37717Ethan SiegelJeff BarrFollowJul 10, 2017 · 1 min readFascinating — what is so special about 1089? Is this more fundamental than 42?