If there is one thing that people rarely think about when constructing a world, it is the sky, even though it seems to be so important for us. The night sky especially plays a large role in fiction, but the daytime can also be radically different than from that of the Earth. A world having a sky which is different than the rest can give it a unique flavour and can make the world that much more interesting. After all, who would not want to find out about why the sky is purple instead of blue, or why there are stars visible even during the daylight? A different sky is a subtle, but elegant touch to an already existing world in order to further differentiate between ours and the world that is being constructed. Your exercise is to imagine the sky of one of your worlds. You can work completely independently or use the following questions as guidelines: What colour is the sky during the day? What colour is the sky during the night? How many suns does the world have? How do they move in relation to each other? How large are they? How many moons does the world have? How do they move in relation to each other? Do they go through lunar cycles? When are they visible? How large are they? Does the night sky have stars at all? If so, what are the major constellations in the night sky? Do any of the constellations have a story associated with them? If yes, please describe the story briefly. Do the sun(s) or the moon(s) have any religious or other significance? Is there a calendar based upon their movements? Does the night sky change over the course of the night? Is there any sort of recurring event which changes the picture of the sky drastically? What does an ordinary person know about the stellar bodies in the sky?