I've already finished the game many times past, but during one of my re-runs, I noticed something rather peculiar: depending on the angle you look at Tahgira's sky, the sky texture is different. When you look up beyond a certain angle, the sky is rather realistic, or at least as far as the clouds I notice (in the distance) go; and when you look forward, the sky changes back to that regular pale-ish blue. I noticed this while at the first pedestal, after climbing the ladder. Has anyone noticed this before?

Try looking towards the horizon and move your view slowly upwards.