Can there be too much of a good thing? Perhaps, when it comes to asteroid samples. That's what NASA discovered in October when its OSIRIS-REx spacecraft swooped down to collect material from the surface of the asteroid Bennu on a "touch-and-go" maneuver. The mission hoped to get at least 60 grams of rocks, but the sampling probe was so stuffed with material that it wedged a flap open, allowing some rocks to leak out. Mission controllers decided to accelerate the process of stowing those samples to avoid having the entire cache lost to space.
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