Suggestions

• What caused the delay in the launch of the Hayabusa spacecraft?

• What tests did Hayabusa perform during its descent?

• Has any other mission attempted a soft contact with the surface of an asteroid before Hayabusa?

• Did the spacecraft go into orbit around the asteroid?

• Where did the reentry capsule land?

• What other missions were considered before the Hayabusa mission?

• What minerals were found in the recovered grains?

• What was the distance from which Hayabusa surveyed the asteroid surface?