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.
it became very hot after the Big Bang
( z1 become :ARG1 ( z2 it ) :ARG2 ( z3 hot :ARG1 z2 :degree ( z4 very ) ) :time ( z5 after :op ( z6 event :name ( z7 name :op "Big" :op "Bang" ) ) ) )