Astronomy

I have decided that when I manage to get a decent sized room of my own, I'm going to obtain a massive glow in the dark poster of the southern constellations and attach it to the ceiling.

If I ever manage to move out and buy my own place, I'll get it painted on the ceiling instead. This product looks highly appropriate. It also seems these people sell the appropriate paints and even have tips for doing it. I'd go with these Australians but I cannot find any information on their site that tells me how long their stuff will glow for!