The mission to retrieve a Mars sample is running into turbulence
Briefly

The mission to retrieve the samples, called Mars Sample Return (MSR), has already caused NASA huge headaches with costs projected to hit $11 billion and a timetable that an independent review declared wholly unrealistic.
Proponents argue it's the best chance to find evidence of life beyond Earth, while critics question the scientific payoff vs. expense, as NASA considers major changes and industry collaboration.
Read at The Verge
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