Self-driving rovers explore Moroccan desert, shooting for Mars
(PHYSorg.com Space & Earth)

Ever since the first successful landing on Mars in the 1970s, scientists have striven to deepen their knowledge of the red planet`s surface. The first successful rover, the Sojourner, was deployed on Mars`s surface in July 1997. Since then, there have been another three successful robotically operated rovers on the planet, collecting information on water, rocks, soils and minerals, and the presence of organic material.