It's not really space madness until you talk back. I've made it a game and I respond. "Speak to me" - "No, you speak to me." "Speak to me" - "Well, I've got nothing to say, love." "Speak to me" "I sure do miss the rings you used to show me" And so on and so forth.
My wife was wandering through the house the other night and caught me. "Who are you talking to?" she asked. "Planets." I responded. She laughed and said "You've been out too long."