“…The Uranian passive sounder concept is based on prior concepts for sounding of Jupiter's Galilean moons using Jovian radio bursts (Romero‐Wolf et al., 2015; Schroeder et al., 2016; Steinbrügge et al., 2021). Passive sounding has been demonstrated experimentally on Earth using reflections of the Sun's quiescent radio emissions reflected off the ocean (Peters et al., 2018), sand (Peters et al., 2021), and water beneath 1 km of ice in Greenland (Peters et al., 2021).…”