This stress ball version of the asteroid Bennu is the second designed by the OSIRIS-REx team. It was created after the spacecraft arrived at Bennu and realized that it was much rockier than they originally thought.
Image of five coins represents a key element of the mission:
Launch coin: features the Atlas V rocket, struck in solid copper
Gravity Assist coin: features OSIRIS-REx and the Earth during its gravity assist maneuver
Surveying coin: features Bennu…