That sample is now helping scientists determine quite a few things about Bennu and its fellow asteroids. So far, we've learned that it is a "rubble pile"-type asteroid rather than a solid body ...

With the return of an Asteroid Bennu sample in 2023 as part of NASA ... The return samples also indicate an abundance of the type of mineral called sheet silicates or phyllosilicates.

Bennu is a fragile type of asteroid that cannot maintain its shape after falling to Earth. That's why I think it hasn't been included in the research so far.' According to the paper, Glavin and ...