Rub... rub... rub... Can you feel the heat? Yes? It's friction! In this STEM episode Eric learns how friction creates heat and can slow down moving objects. It's not magic, it's science! Educational Gist: Friction is a force that prevents objects from sliding against each other. The rougher the two surfaces, the greater the friction. In space, there is no atmosphere to create resistance, so there is no friction and objects can keep moving indefinitely.