Today, as Φ-week gets underway, ESA has signed a contract with Surrey Satellite Technology Ltd to build the HydroGNSS Scout mission. Embracing the concept of New Space, HydroGNSS is a micro satellite that will use a technique called Global Navigation Satellite System (GNSS) reflectometry to measure climate variables such as soil moisture, freeze–thaw state over permafrost and inundation.