“Waking up in the same place in which you dozed off has never happened either to you or to anyone else. Ever. Earth does not stop moving when you sleep. Every hour that passes, Earth travels a little more than 800,000 kilometres around the centre of our galaxy. And so do you. That's the equivalent of about twenty trips around the planet. Every hour. No one minds, though, as long as their bed stays still beneath their body.” BodyEarthSleepMovementBedCentreGalaxyNeverMoveWaking UpTripHourTripsKilometresDoze Off Book:The Universe in Your Hand: A Journey Through Space, Time, and Beyond Source: The Universe in Your Hand: A Journey Through Space, Time, and Beyond