My whole life I’d thought of Earth as this place where we’re in control of our lives. I’d wake up, go to the grocery store, take my kid to a baseball game. It was this safe, stable cocoon. Now it wasn’t that anymore. In space I could see the Earth in relation to the stars and the sun and the moon. The Earth is a planet. It’s a spaceship. We’re zipping around the universe, hurtling through the chaos of space with asteroids and black holes and everything else, and we think we’re safe but, boy, we are right out there in the middle of it.