Besides Genesis [1] and Stardust [2], Hayabusa2's predecessor [1] successfully brought back some micrograms of material from asteroid 25143 Itokawa. This was mu

Besides Genesis [1] and Stardust [2], Hayabusa2's predecessor [1] successfully brought back some micrograms of material from asteroid 25143 Itokawa. This was much less than the original goal, but the mission was plagued by technical problems and sheer bad luck, so bringing back anything at all was still a major achievement. [1] https://en.wikipedia.org/wiki/Genesis_(spacecraft) https://en.wikipedia.org/wiki/Genesis_(spacecraft) [2] https://en.wikipedia.org/wiki/Stardust_(spacecraft) https://en.wikipedia.org/wiki/Stardust_(spacecraft) [3] https://en.wikipedia.org/wiki/Hayabusa https://en.wikipedia.org/wiki/Hayabusa