John Spencer is an Institute Scientist at Southwest Research Institute’s Solar System Science and Exploration Division.  A native of Colne, Lancashire, England, he obtained a B.A. in Geology from the University of Cambridge (1978) and a PhD in Planetary Sciences from the University of Arizona (1987), and worked at the University of Hawaii and Lowell Observatory before joining SwRI in 2004.  He specializes in multi-wavelength observational studies of satellites and other small bodies in the outer solar system, using Earth-based and space-based telescopes, and interplanetary spacecraft.   He was a member of the science teams for the Galileo Jupiter orbiter, the Cassini Saturn orbiter, and the New Horizons mission to Pluto and the Kuiper Belt.  He now works on the Europa Clipper mission where he is Deputy PI of the E-THEMIS thermal mapper and a member of the Europa Ultraviolet Spectrometer team.  In addition, he is Deputy Project Scientist and science planning lead on the Lucy mission to the Trojan asteroids.  He received the 2016 Whipple award from the American Geophysical Union (AGU), SwRI’s Bill Gibson award in 2018, and was elected an AGU fellow in 2021.