What role does the strategic depositing of sterilized sample tubes on the surface serve for the Sample Return campaign?

Answer

It acts as a critical test case and backup retrieval point for the future return architecture.

By depositing tubes in a dedicated caching depot, Perseverance provides a critical test case for the return architecture; if the rover were to fail before this step, the subsequent Sample Return mission would face substantially more risk collecting directly from unprepared sites.

What role does the strategic depositing of sterilized sample tubes on the surface serve for the Sample Return campaign?

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