NASA’s mars rover Perseverance is continuing to build a curated rock and regolith sample collection on Mars as part of a campaign to set aside material for possible return to Earth.
The Perseverance mars rover carries a Sampling and Caching System that collects rock cores and regolith, seals them inside sample tubes and stores selected tubes in the rover for later drop-off or pickup, according to NASA mission pages describing the rover’s sample system.
Perseverance’s job is not only to collect promising cores but also to establish a depot of cached tubes on the surface that a future mission could retrieve, NASA says; the agency describes the rover as “the first rover to bring a sample caching system to the Red Planet” and notes the tubes are destined to carry the first samples from Mars back to Earth.
The sample campaign is linked to the international Mars Sample Return effort: NASA and the European Space Agency have outlined steps for returning the cached tubes to Earth, and Perseverance will scout and deposit select samples to support that multi-mission plan.
Engineers at JPL designed the rover’s coring drill and robotic arm to take sealed cores that preserve interior minerals and possible biosignatures, and NASA documentation highlights how the sampling system reduces contamination risk by using sterile sample tubes kept inside the rover until sealed.
For readers tracking robotic exploration, the mars rover Perseverance’s ongoing caching work follows years of planning: NASA’s Mars 2020 mission overview and subsequent mission pages explain the mechanics of coring, tube sealing and surface caching that make a later sample retrieval possible.
The Perseverance mission continues to return imagery and status updates through NASA’s Mars mission pages, which also describe how the rover selects, records and stores samples for the Mars Sample Return campaign.
Sources
- NASA — described Perseverance’s Sampling and Caching System, the sample tubes and the plan to deposit samples for future retrieval; provided mission overviews about Mars Sample Return.
- BBC News — noted that Perseverance is building a store of rocks that could be brought home by a future mission.
- Associated Press — reported on Perseverance’s rock findings and the mission’s objectives in sampling Martian geology.
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