15 Things You May Not Know About Solar Energy Kristen Pope Economics, Government, History, Politics & Economics, Science, Science & Medicine, Society & Culture Ancient Greeks worshiped Helios, the “Sun God.” It’s not hard to see why they worshiped the personification of the great ball of fire in the sky. The sun provides warmth, heat, and now—energy. Here, science writer Kristen Pope provides 15 facts about solar energy you likely didn’t know.