The FSSCat mission is based on two CubeSats, each about the size of a shoebox, that use state-of-the-art dual microwave and multispectral optical sensors to measure, for example, soil moisture, ice extent, ice thickness, urban heat islands and to monitor changes in vegetation and water quality. To take FSSCat to the next level, ESA worked with partners to develop ɸ-sat-1 artificial intelligence to give FSSCat more spectral capabilities and improve the efficiency of sending vast quantities of data back to Earth.