You may think our world, the earth, is standing still. But it isn't. The earth is spinning around and around, like a huge top. Push a stick through a ball of clay and then twirl the stick. The clay...
You may think our world, the earth, is standing still. But it isn't. The earth is spinning around and around, like a huge top. Push a stick through a ball of clay and then twirl the stick. The clay...