Every 75 years, a ball of fire streaks across the sky. But that's no fireball. It's Halley's Comet. And you're about to hitch a ride on it. Get ready for a journey around the Sun to the edge of the Solar System. And back again. What conditions would you find there? How would you manage to survive on your new icy home? And what would it have in common with a trip to a Hawaiian island?