"We have had very detailed mapping of that basin from images, from orbital spectraldata, but we have not had high-resolution of its interior structure, " Grail's chief scientist, Prof Maria Zuber, who has been speaking at the Lunar and Planetary Science Conference (LPSC) in The Woodlands, Texas, told BBC News.
That energy depletion would have resulted in a spectral distortion detectable by OPERA. However, the OPERA data did not show either the energy depletion or the spectral shift.