Buzz Aldrin was excited for a closer examination of Phobos and its 279ft x 300ft monolithic feature

- https://www.youtube.com/watch?v=bDIXvpjnRws - https://en.wikipedia.org/wiki/Phobos_monolith

is the ability to more easily return samples from Phobos vs Mars because it's a moon with much less gravity?

that seems logical, clever actually they are doing that alternative

but Mars and its moon likely very different composition?

Return to Earth targeted for 2031 https://www.mmx.jaxa.jp/en/