What's beyond the sky?

"My mother always talked to me a lot about the sky…she liked to watch the clouds in the day and the stars at night, especially the stars…we used to play a game sometimes, a game called “What’s beyond the sky”. We imagined darkness or blinding light or something else that we didn’t know how to name, but of course that was just a game…there is nothing beyond the sky…the sky just is..and it goes on and on…and we play all of our games beneath it.”

from "Taken"