doubleofive said: how freaking big is some of that welding to be seen from this distance from something that big?
If it was out in the open (unobstructed view), I think you could even see the light from a regular little ol' Earth welding torch at that distance because it's so insanely retina-burning bright.
I'd like to see a GIF of that with little lights blinking here and there. Maybe some little dots buzzing around to indicate small robots or ships doing work, too.