Sunrise in the third system

Spotted this as I parked at work this morning, and quickly took several shots. This is the best (obviously!) and it's been straightened up a bit and darkened slightly so the colours glow a little more against the silhouettes. I've avoided cropping, as I like the lens flare.

Why the third system? Sunrise in the third system is the first track on an early Tangerine Dream album (Alpha Centauri), and the name popped into my head as I was taking the photos, so why not? We are the third planet, and having a moon means we're a system I guess :-)