A while back a group of astronomers attempted to change the name of the beginning
of the Universe into something a bit more dignified than the Big Bang.

That was the term Fred Hoyle labeled the idea of the Universe starting out as a
primordial atom that suddenly and rapidly expanded into everything we know about
13.7 billion years ago.

Hoyle was a staunch defender of the Steady State theory of cosmic formation,
which said that the Universe had always existed and that somehow new matter was
always being formed. He derided the primordial atom and its initial actions with the
term "Big Bang", which stuck.

And despite efforts by such notables as Calvin and Hobbes to come up with something
else ("The Horrendous Space Kablooie!"), nobody had any better ideas, or more
accurately the astronomers did not accept anything else, so we still have the Big Bang,
derisive or not.

I always thought "Oops!" summed things up pretty well.