Hayabusa

Ten years ago, an interplanetary projectile streaked to Earth. It actually came from Earth, but it carried a cargo from beyond our planet: less than a gram of dust from the surface of an asteroid.
Hayabusa was a test in patience and planning. The Japanese mission was launched in 2003. But a lot went wrong. A solar flare damaged its solar cells, which powered its engines. That delayed its arrival at the asteroid Itokawa.
Once there, it was supposed to drop to the surface and fire some small “bullets” into the asteroid. It then would gather up some of the dust blasted off the surface. But that didn’t work. Instead, the craft hit the asteroid. That knocked off a few dust grains for its collectors.
Hayabusa also carried a small rover. But it was deployed a bit late, so it missed the asteroid entirely. And problems with communications and other systems delayed the mission’s return to Earth.
Flight controllers worked around the problems, though, and got the craft back home on June 13th of 20