On an frozen Earth dragged out of its orbit by a wandering star, a boy is asked to go collect some more air...A truly great story. ( )

This is one of the science fiction stories that has haunted me since childhood. The Earth, knocked out of its orbit, gets cold enough to freeze oxygen. One family finds a way to survive. As a child I marveled at their resourcefulness; as an adult I wondered whether survival was worth the cost. ( )