NASA's troubled Mars sample-return mission has scientists seeing red NASA's Mars Sample Return program is the agency’s highest priority in planetary science, but projected multibillion-dollar overruns have some calling the plan a 'dumpster fire.' https://cdn.mos.cms.futurecdn.net/BRmR6J25JhBehfYTbwiHMJ.jpg https://www.space.com/nasa-troubled-mars-sample-return-mission-scientists-upset