It is with great sadness that we report the sudden death of our friend and colleague, Bob Lin. Bob was an emeritus professor of physics at UC Berkeley and a former director of the Space Sciences Laboratory. He also held a chaired professorship at Kyung Hee University in Korea, and was a visiting professor at Peking University in China.

His brilliant research career embraced areas of solar physics, heliospheric physics, planetary geology, magnetospheric physics, and astrophysics, and he will be warmly remembered by his many friends in these areas. He had just successfully embarked on a relatively new and very promising area of research, the measurement of energetic neutral atoms in space with a “swarm” of microsatellites. He was fortunate enough to see the successful launch of the first of this swarm, CINEMA. The full program will consist of two cubesats from Berkeley and two from Kyung Hee. Bob’s wisdom, enthusiasm, and unfailing courteousness will be missed by his friends, colleagues, and his many students. His wise counsel contributed strongly to both national and international levels of planning in his fields of expertise, and especially at our institution.

S.D. Bale, H.S. Hudson, F.S. Mozer, and G.K. Parks Space Sciences Laboratory, UC Berkeley