...'Fireworks Theory', which suggested that the universe began as a geometrical point, a 'primeval atom', which burst into glory and had been moving apart ever since...- A Short History of Nearly Everything, P173
Having read this I started to imagine how fireworks would behave under zero gravity conditions.
Since there would be no gravity to pull the sparks into a downward curve, they would radiate out from the intial point, like spikes on a sea urchin. (not considering the force from ejecting it out in the first place)
And if a lone firework was ignited in a vast space of vacuum in 0G, then the sparks would travel outward for ever and ever...expanding the boundary at incredible rates.
So much for the Big Bang!