The NASA-European mission campaign has been revamped again.
, which landed with Perseverance last year, will be backup options to pick up the caches themselves.
"There will be landing legs that include, at the bottom of them, mobility wheels," Cook explained, saying this new capability will allow the helicopters to"traverse across the surface." A mini robotic-arm on each of the craft will allow the drones to pick up the sample tubes Perseverance leaves behind, if need be.If the helicopters are needed for such work, they will land near a sample tube, roll over to pick it up, then fly to a spot near the Mars ascent vehicle.
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