Stories about space, night-time etc

[wind1]

Hi, this is my first post although I have used the site for info and found it very useful. For my level 3 my assessor has asked me to prepare an area in the setting based on anything I want, setting it up then doing observations and reflective accounts over a period of a week. I would like to base it on a story with a space or night-time theme or maybe something to do with a cave, the dark or something. Does anyone know of any good story books (ages 2-5) as a starter. I just want a story to start it all off then I can add other activities linked to it.