Science Priorities for Mars Sample Return

This objective is an extension of MSL Objective #1 (Table 1), ExoMars Objective #4 (Table 1), and MEPAG Objectives I-A, II-A, III-A and III-B and has long been considered a major objective of MSR (e.g. McPherson et al., 2001; 2002). Determine how the Martian regolith was formed and modified, and how and why it differs from place to place ... ................
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