 Once the sampling and "in-situ" measurements are completed, the MSC would start the return journey towards Earth and would release the capsule for the high-speed re-entry into Earth's atmosphere.After appropriate space quarantine and sterilization processes, samples would be taken out of the capsule in a dedicated sample curation facility to conduct initial sample characterization, prior to their distribution to designated scientists for detailed analyses.Some proposed targets of the Marco Polo concept were