S. Peter Gary, SSI Senior Research Scientist, Santa Fe, NM, was an international expert on the waves and instabilities of space plasmas. He received his B.S. in Physics from Case Institute of Technology in 1961, and his Ph.D. in Physics from Washington University in St. Louis in 1967. He served for six years on the faculty of the Physics Department at the College of William and Mary in Williamsburg, VA. Peter joined the staff of Los Alamos Scientific (now National) Laboratory in 1977 and subsequently served there as a respected manager, mentor, and intellectual leader. In 2012, Peter retired from LANL and joined SSI as a Senior Research Scientist. His distinguished research career concentrated on the theory and simulation of waves, instabilities, and turbulence in the collisionless plasmas of the Earth's magnetosphere and the solar wind. He authored 586 works on ADS, including well over 100 first author publications, and a scientific monograph, "Theory of Space Plasma Microinstabilities" (Cambridge Univ. Press, 1993). Peter is survived by his wife, Carol Ann Mullaney.