Within trillionths of a second after the Big Bang, they have reasoned, the primordial explosion - many billions of degrees hot - must have created a universe that contained equal quantities of matter and antimatter.
We originated from the big bang according to this text
All matter has come from the big bang
( z1 originate :ARG1 ( z2 we ) :ARG2 ( z3 bang :mod ( z4 big ) ) :ARG1-of ( z5 say :ARG0 ( z6 text :mod ( z7 this ) ) ) )