Picture of the assembled SPHEREx observatory, including its outer photon shield, taken in the BAE Systems spacecraft assembly facility in Boulder, CO. The solar array is the only major missing component and will be installed this summer after the completion of the thermal vacuum test. The instrument control electronics box, masked by its radiator cover, can be seen on the bottom right-hand side of the spacecraft. The payload has been fully checked out after its assembly onto the spacecraft bus, and the observatory is preparing to enter its environmental test campaign. (Credit: BAE Systems, Courtesy NASA/JPL-Caltech)