If we're the most advanced civilization ever, how come the ancient Sumerians knew so much about the Solar System – things we know only with the aid of modern technology? Why do the Earth's moon (Luna) and Mars' moons (Phobos and Deimos) appear to be hollow? Why does Saturn's moon Iapetus look like the Death Star in "Star Wars"? Why are there so many things on the surfaces of these moons, such as mile-high objects, tracks and pyramids? Are they all artificial satellites? How can we explain artifacts showing that ancient civilizations were able to produce electricity (e.g. the Baghdad Battery)?

50-min.