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 extremely hot after the primordial explosion.
( z1 become :ARG1 ( z2 it ) :ARG2 ( z3 hot :ARG1 z2 :degree ( z4 extreme ) ) :time ( z5 after :op ( z6 explode :mod ( z7 primordial ) ) ) )