It is with great sadness that we inform you that Timothy J. Lee, our beloved husband and father, passed away on Thursday, November 3rd. He was in the company of his wife, Julia, their three sons Sebastian, Marcus, and Trevor, and his niece Brittany.

Tim was known for his love of family, his lifelong research as a quantum chemist, and his mentorship of young scientists.

Born to Catherine A. Caskins and David T. Lee in Denver, Colorado on Dec 14th, 1959, he was their second child alongside brothers Dave and Mike. With his brothers, he fostered a lifelong enthusiasm for sports that he would later pass on to his own three sons through coaching them in baseball and soccer.

Tim began his studies at the Colorado School of Mines where he developed his passion for chemistry. While continuing his education through graduate studies at UC Berkeley, he met his future wife, Julia Rice, who was a visiting Ph.D. student from Cambridge. Julia and Tim were married on June 18, 1988, at Clare College, Cambridge. Together they raised three boys in Sunnyvale, California.

Tim had a prolific 33-year career at NASA Ames Research Center, serving over 10 years as the Division Chief of the Space Science and Astrobiology Division and receiving the NASA Exceptional Scientific Achievement Medal in 1998 and 2011. He was respected and admired by his colleagues worldwide for his research, expertise, and dedication to theoretical chemistry and has been recognized many times for his scientific achievements. In 1988 he received the first Dirac Medal from the World Association of Theoretical and Computational Chemists for being an “outstanding computational chemist in the world under the age of 40.” He was an elected Fellow of the American Physical Society and of the American Association for the Advancement of Science.

Above all, Tim was a pillar of strength and support for his family. He was an endlessly caring father and devoted husband who loved to gather his family around the table each Saturday evening to eat together, share stories, and discuss current events. He supported his family through thick and thin with extraordinary attentiveness and care and was always involved in their passions, challenges, and achievements.

We know that Tim will be gravely missed by those of us who have had the privilege of his presence and care. We will carry his memory with us for the rest of our lives. 

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