Dave5

As frustrating as the Fort Knox-esque canister conundrum has been, what has been analyzed so far has offered some pretty incredible results — though they too have left scientists with more questions than answers.

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Those lighter-colored bits are magnesium, phosphate, and sodium per the early analysis, and that bright and brittle outer layer chips off to reveal darker rock beneath it, the UA planetary scientist explained. Wilder still: that combination is thought to be rare in asteroids, making it something of a “head-scratcher,” per Lauretta.

https://futurism.com/the-byte/scientists-surprised-bennu-samples