B. Ray Hawke

Elemental abundances (plotted by 5° square, and additionally in higher definitions for H and Fe respectively) in data gleaned from the 570 day mission of Lunar Prospector (1998-1999) [NASA].

Sadly, we receive news of the passing of B. Ray Hawke, whose contribution to a vast body of work can be sampled only by a glance at merely at a partial list of the 322 papers, authored and co-authored, and presented to the annual Lunar and Planetary Sciences Conference, HERE. 

Requiescat in pace