When students first learn how fast the Earth moves, the reaction is usually the same. If the planet is spinning at about 1,000 miles per hour and racing around the Sun at nearly 67,000 miles per hour, ...
Do the planets revolve around the sun? Sort of. Our solar system moves around a common center of mass, called a barycenter. And right now, that barycenter isn’t even inside the sun! The barycenter of ...