It was a starry night last night and it inspired me with a few potential words of the Doctor...
'I cannot believe I've only just realised...! *tinkers with console* All these universal dimensions and parallel universes; every single one has one thing in common...They're of the same Universe! So, it almost certainly begs a few questions to which I haven't answered yet; what if there was more than just the end, what if we could go beyond every single atom of dark matter in existence...? What if...the limit was just another wall...? *insanely smiles* Right, a quick stop in Cardiff to refuel the TARDIS and then hang on to your Fez; we're going to breach the edge of the Universe!'
I hope http://twitter.com/steven_moffat will come across this! Haha
By the way, I recommend reading it all with either of these tracks playing...
Hope you enjoy! :D