As you are reading this, you are probably aware of the chair (or the floor) pushing your body up, but you might not be aware that your body is actually moving.  As the earth spins and rotates around the sun, all of the bodies on it are in motion.  We just don’t realize it because we are part of the system that is moving.   It’s like when you’re in a car that is moving, unless you’re watching out the window you can do other things, like read or play video games or watch a movie.