Fund or cancel? Robots or humans? NASA punts on Mars Sample Return decision Ars TechnicaNASA is fighting to return samples from Mars. Here are the two ways they might do it in the 2030s CNNNASA collected Mars rocks to haul to Earth. It still hasn’t decided how. The Washington PostNASA has just two Mars Sample Return mission lander options left The RegisterNASA exploring two lower-cost options to go forward with Mars Sample Return mission ABC News