This magnificent planet has been major candidate for the science fiction movies for many decades. When we consider all the facts it is impossible to imagine that any life could exist on Mars. However, scientists believe that straight lines on Mars are evidence of ice deposits underneath the planet's surface. The most concrete theory is that life on Mars existed billion years ago and some believe that there are remains of ancient civilization on Mars surface. The strange belief, based on Mayan studies, is that Martians fled their planet and landed on Earth (some believe that Mayans descended from Mars). Today Mars is made up of iron with largest volcano in our Solar system called Olympus Mons (see photo bellow) and largest canyon Valles Marineris, which is 2,500 miles long. Mars has two moons and scientists believe that the moon Phobos will crash into Mars in less than 50 years. Moon debris will stay in Mars atmosphere thus creating ring around the Mars similar to the Saturn's ring. Interesting fact about Mars is that NASA sent many missions to Mars and more than half of them disappeared without trace.