If the Big Bang was described , as say, "a flea giving birth to a Blue Whale" - would that be a good analogy?- does that quantify the extremes of what happened?
Also would it be right to describe the Big Bang as a nuclear explosion?- if so how many megatonnes of power was it?
How would you analogize the Big Bang?

Their was no bang, it was an expansion, a big woosh, sizzle (cooling).
Plus once all the space expanded, their was more space to expand!
If you think about it, th woosh is still happening.

Now, my question is 'What caused the expansion?' The idea I get from your words, 'a big woosh,' is that when the total universe started expansion, everything else started expanding also. Look at Jupiter, Saturn, Uranus, Neptune. They are ringed planets; something caused those planets to expand in the same way our moon was formed. In my mind is a picture sequence. A split-second flash of light and then a split-second withdrawal of that light to expose the darkness.

Instead of a 'Big Bang,' could there have been a 'Big Collision?' All of these colliders are colliding atoms and they're searching for something about the 'Big Bang.' How many atoms were there in the 'Big Bang?'