Workers in white protective clothing are on their backs and stomachs working underneath the main body of the Europa Clipper spacecraft. The spacecraft is mostly covered in protective materials but orange-red boxes and copper-colored wires are visible.

Europa-Clipper Reaction Wheel Installation

Workers at NASA's Jet Propulsion Laboratory (JPL) install reaction wheels on the Europa Clipper spacecraft. Once in space, the wheels rotate the orbiter so that it can communicate with Earth.

Credits: NASA/JPL-Caltech