December 2, 2014NASA's Journey to Marshttp://mars.jpl.nasa.gov/msl/multimedia/images/?ImageID=6829NASA is developing the… https://www.rawpixel.com/image/9975908/photo-image-astronaut-moon-spaceFree Image from public domain licenseDifference Variety Diversity Teamwork Success https://www.rawpixel.com/image/1180885/image-rawpixelcomView license