It is not appropriate whatsoever to draw the early universe to an 'explosion' by analogy. The 'Big Bang' was a moment in time when the universe was infinitely hot and dense, As the universe expanded, it cooled thermodynamically, then the elementary forces and particles separated to their current ratios. Cosmic inflation occurred at 10^-37 after the BB, and expanded the quantum fluctuations in the early universe, that would come into play later in galaxy and star formation. These frameworks have predicted everything from the cosmic microwave background (CMB) and the anisotropy in the universe -- see the WMAP results.
That's the gist anyways.
That's the gist anyways.
