I am not quite sure if this is the right area to post this thread, but I know that energy on our planet comes from the Sun, which constantly supplies the planet with this energy. Since the sun gives a constant supply to us, in order to keep our plants alive, shouldn't the amount of energy on our planet increase further and further untill it burns out? After all, the Law of Conservation of Energy states that energy cannot be created, nor destroyed. Also, to my knowledge, our planet does not heat up space, so where would the extra energy go? According to my science teacher, the amount of energy on Earth doesn't grow or shrink. Is he wrong?