Four Faces of Mars . ... WFPC2 , HST , NASA Explanation: As Mars rotates, most of its surface becomes visible. During Earth 's recent pass between Mars and the Sun , the Hubble Space Telescope was able to capture the most detailed time-lapse pictures ever from the Earth . ... Visible in the above pictures are the north polar cap , made of water ice and dry ice , clouds including an unusual cyclone , and huge volcanoes leftover from ancient times. ... NASA Official: Jay Norris. ...