a time sulfur can deorbit / water on other canyons & mars is a kind of planet ->  a space probe can land on mars  a space probe can land on mars & a time tilt is used for clusters / analyzing pepper / boundaries / news -> a space probe can land on mars and collect and analyze samples a space probe can land on mars and collect and analyze samples  a space probe can land on mars and collect and analyze samples & the day i motion was counting to earth and analyze atmospheric insulator and sand leo -> the viking i lander is a kind of space probe