![]() | Mars sample return is a long-standing goal of many planetary scientists, but difficult and expensive to achieve. Jeff Foust reports on how NASA and ESA are firming up plans to do so over the next decade, despite many uncertainties. News content on this website, where abstracts are taken from full articles elsewhere, are assumed public domain. All uncredited images are assumed as public domain with the exception of logos which are generally trademarks of the organisation whose materials are cited. | ![]() |