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Curation protocol of Phobos sample returned by the Martian Moon Exploration (MMX)

The Martian Moons Exploration (MMX) aims to return the regolith samples from the Martian moon, Phobos. After the topographic and spectroscopic observation, the spacecraft will land on the surface of Phobos to conduct the sampling operation[1–2]. Pneumatic and coring samplers will collect ≥10 g Phobos grains from two different sites. The collected samples will be retrieved from the capsule and transferred to the curation facility in 2029.

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NASA NTRSDate not supplied

MSR Curation Technology Development – Developing Protocols for Pre-Basic Characterization Measurements

The joint NASA/ESA Mars Sample Return (MSR) campaign could deliver to Earth the first pristine Mar-tian rock and regolith samples, collected by the Mars2020 science mission, Perseverance. In preparation for their arrival, the NASA/ESA Joint Curation Office (JCO) within the Sample Receiving Project (SRP) is developing curation technology needed to perform initial characterization of the samples while isolating samples from the Earth’s biosphere and protecting the samples from terrestrial contamination. (RSTA; Fig. 1). The Mars Sample Return Planning Group 2 (MSPG2) identified methods for achieving an array of potential science objectives for MSR outlined by the International MSR Objectives and Samples Team (iMOST) [1]. One category of methods, called Pre-Basic Characterization, recommends potential analyses that would happen before the Returnable Sample Tube Assemblies (RSTA; Figure 1) are opened: 1) Magnetometer & Magnetic Susceptibility; 2) X-ray Computed Tomography (XCT) Scanner [2]. To be in compliance with planetary protection requirements, and to limit the amount of time sample tubes are out-side of an isolated contamination-controlled environment, secondary containment is necessary. A Sample Tube Isolation Container (STIC) and Secondary Outer Containment Case (SOCC) is currently being developed at NASA JPL under the direction of the SRP JCO.

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