It is generally accepted the theory means this:
No, it is not accepted as that. It is not considered to be an explosion, but more of a rapid expansion. You also forgot supernovae, which is what planets are formed from. Stars, were formed out of the heavier elements (didn't cavediver already say this?) which went supernova, creating planets (there is much more involved, but you were far off). I might suggest a further study of cosmology and, at the very least, star or galaxy formation.
I'll let cavediver or any of the other resident cosmologists address the rest, for I am but a rookie.
Edited by hooah212002, : clarification
"A still more glorious dawn awaits
Not a sunrise, but a galaxy rise
A morning filled with 400 billion suns
The rising of the milky way"
-Carl Sagan
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