Skipp_To_My_Lou t1_j5vra6n wrote
Reply to comment by fishling in Why do sample return missions such as OSIRIS-REx use their own reentry vehicles instead of just going to the space station for pickup and return with ISS equipment? by PromptCritical725
Even if the sample tube attaches to the exterior of the space station, at some point they will have to bring it inside to transfer it to the reentry vehicle & every set of hands touching it is another opportunity to contanimate the sample.
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