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+{{BLP unsourced|date=December 2021}}
+'''Christopher Williams''', 38, grew up in Potomac, Maryland. He graduated from Stanford University in 2005 with a bachelor’s degree in physics and a doctorate in physics from MIT in 2012, where his research was in astrophysics. Williams is a board-certified medical physicist, completing his residency training at Harvard Medical School before joining the faculty as a clinical physicist and researcher. He most recently worked as a medical physicist in the Radiation Oncology Department at the Brigham and Women's Hospital and Dana-Farber Cancer Institute in Boston. He was the lead physicist for the Institute’s MRI-guided adaptive radiation therapy program. His research focused on developing image guidance techniques for cancer treatments.
+
+In November 2021 he is selected as a NASA astronaut.
+{{NASA Astronaut Group 23}}
+
+[[Category:Astronauts]]
+[[Category:Stanford University alumni]]