Tricky one......

This is either, the lights of the Mother Ship making her final descent to earth, bringing with her a bunch of hormonal aliens, who are pissed off at being dragged from a warm summer on Vega VI, to freeze their tentacles off in Edinburgh (without so much as a comfort break as they travelled the A34 black hole between the solar systems,where the bloody traffic jam lasted the best part of four light years) or it's the ceiling of the upper auditorium in the Edinburgh International Conference Centre, where we went to see a couple of illusionists this evening.......

It's a tricky one........