Pathfinder on Mars. Dec 12th, 1997. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440487/free-photo-image-nasa-planet-mars-marsFree Image from public domain licenseThis grouping of two test rovers and a flight spare provides a graphic comparison of three generations of Mars rovers… https://www.rawpixel.com/image/440549/free-photo-image-nasa-mars-surfaceFree Image from public domain license