The surficial nature of lunar swirls as revealed by the Mini-RF instrument

► New imaging data of the lunar swirls from NASA's Lunar Reconnaissance Orbiter. ► First global views of the lunar swirls at radar wavelengths (12.6 cm and 4.2 cm). ► The average radar properties of the lunar swirls are identical to non-swirl regions. ► This implies that swirls are related to a very thin (