July 31, 2012 € NASA has planned one of the most complicated spacecraft landings ever attempted for the Curiosity rover's touchdown on August 6 at about 1:30 am. ET.The complex procedure involves the use of the largest supersonic parachute ever built and a 'sky crane' to lower the rover onto the Martian surface. 'If any one thing doesn't work just right,' says one engineer, 'it's game over!'
