REXIS can image X-ray emission from Bennu in order to provide an elemental abundance map of the asteroid's surface.
MIT graduate students Pronoy Biswas (left) and Mark Chodas prepare the Regolith X-Ray Imaging Spectrometer (REXIS) instrument for flight. REXIS can image X-ray emission from Bennu in order to provide an elemental abundance map of the asteroid’s surface.