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 due to the primordial explosion
( z1 cause :ARG0 ( z2 explode :mod ( z3 primordial ) ) :ARG1 ( z4 become :ARG1 ( z5 it ) :ARG2 ( z6 hot :ARG1 z5 :degree ( z7 very ) ) ) )