Mysterious Mars Screensaver - Version 1.1 The free screensaver, Mysterious Mars, was created by RateMyScreensaver.com and contains 19 high resolution images of planet Mars. Mars is the fourth planet from the Sun and is known as the Red Planet due to its reddish appearance as seen from Earth. The planet is named after Mars, the Roman god of war. A terrestrial planet, Mars has a thin atmosphere and surface features reminiscent both of the impact craters of the Moon.