Indeed, firefly is a great show, a pity there's only one season.
On topic: very nice animation Stephen. I like the (atmospheric) haze density and its lighting. Nice camerawork as well. I guess adding some more variation in your terrain and maybe some water here and there as well would bump the rendertimes way up too much isn't it?
Nevertheless, great work! Would love to see something like this in 720p or even 1080p...even it is only 1 sec. :p
Martin