Laboratory Representation, Deep Space Atomic Clock
A laboratory representation of the Deep Space Atomic Clock, with a quarter alongside the unit for size comparison, and without the electronics required for operation. It also contains laboratory components, including a metal frame, instead of flight hardware. At just under 0.2 cubic feet and weighing about 7 pounds, the clock is smaller, lighter and more stable than any other atomic clock flown in space.
Image credit: NASA/JPL