NASA's Curiosity rover which found evidence that ancient Mars had the right conditions to support microbial life has marked five years of exploring the red planet. <br/><br/>Curiosity, which landed near Mount Sharp five years ago, is examining clues on that mountain about long-ago lakes on Mars. <br/><br/>On August 5, 2012, the mission team at NASA's Jet Propulsion Laboratory in Pasadena, California, exalted at radio confirmation and first images from Curiosity after the rover's touchdown using a new "sky crane" landing method. <br/><br/>NASA said transmissions at the speed of light took nearly 14 minutes to travel from Mars