Reprogramming on orbit is increasingly becoming a hard requirement for space payload electronics. Satellite payload electronics' complexity have evolved so much that it is impossible to identify hardware bugs until the satellite is launched. The ability to reprogram an FPGA in space can be used to fix critical bugs. Furthermore, re-programmability in the FPGAs enables tuning of data processing algorithms to give the optimum results for new science missions. When the primary mission of the satellite is accomplished, the satellite hardware can be re-purposed to accomplish additional objectives if the FPGAs can be reprogrammed.