We have been awarded a contract with the European Space Agency (ESA) to develop a fault- and radiation-tolerant system-on-chip. Funded by the Swedish National Space Agency, the project will improve performance and power efficiency in satellite and spacecraft applications by developing a 16-core, space-hardened microprocessor based on the open RISC-V instruction set architecture (ISA). The GR7xV processor is based on the NOEL-V processor IP core and will be designed into spaceborne controls and payload data management and processing systems to enable new kinds of observational, communication, navigational and scientific missions and services. These include advanced, flexible telecommunications satellite payloads, scientific and earth-observation payloads and robotics systems such as planetary exploration rovers.