Аннотация:The spectral differences at the Mare Moscoviense swirl correspond to a difference in maturity even
without a relevant magnetic field that would shield the surface from space weathering. This means
that magnetic shielding alone is not able to explain the origin of this swirl. A possible explanation for
the immaturity is the resurfacing of immature regolith by the cometary gas. The linear correlation between the content of nano-phase and micro-phase Fe partciles values is another clue that both types of particles are created by similar processes.