JS
Member Since 1998
John R. Spencer
Institute Scientist, Southwest Research Institute Boulder
Professional Experience
Southwest Research Institute Boulder
Institute Scientist
2012 - Present
Education
Doctorate
1987
Honors & Awards
Union Fellow
Received 2021
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Fred Whipple Award and Lecture
Received 2016
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Publications
Snow Crash: Compaction Craters on (486958) Arrokoth and Other Small KBOs, With Implications

Evidence from Arrokoth and comets strongly suggests a very low density for this and similar small Kuiper belt objects. Plausible compositions imply...

July 06, 2022
AGU Abstracts
Bridging the Energy Gap: Solar Wind Data from PEPSSI and SWAP on New Horizons
THE PAST, PRESENT, AND FUTURE OF HELIOPHYSICS THROUGH IN SITU OBSERVATIONS OF THE OUTER HELIOSPHERE AND THE INTERSTELLAR MEDIUM II ORAL
spa-solar and heliospheric physics | 15 december 2023
Ralph L. McNutt, David J. McComas, Matthew E. Hill...
The New Horizons spacecraft, launched in 2006, continues to return unprecedented charged particle data from the outer heliosphere. The Pluto Energetic...
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Heating of Energetic Pickup Ions in the Supersonic Solar Wind Region by Shock Waves: Observations and Modeling
THE PAST, PRESENT, AND FUTURE OF HELIOPHYSICS THROUGH IN SITU OBSERVATIONS OF THE OUTER HELIOSPHERE AND THE INTERSTELLAR MEDIUM I POSTER
spa-solar and heliospheric physics | 14 december 2023
Parisa Mostafavi, Gary P. Zank, Matthew E. Hill, M...
The outer heliosphere is a highly dynamic region that is profoundly influenced by the presence of nonthermal energetic pickup ions (PUIs). These PUIs,...
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The Europa Thermal Emission Imaging System(E-THEMIS) Investigation for the Europa Clipper Mission
OCEAN WORLDS AND SEARCH FOR LIFE: HORIZONS IN ICY SATELLITE SCIENCE AT THE LAUNCH OF THE HISTORIC EUROPA CLIPPER MISSION II POSTER
planetary sciences | 14 december 2023
Philip R. Christensen, John R. Spencer, Greg Mehal...
The Europa Thermal Emission Imaging System (E-THEMIS) on the Europa Clipper spacecraft will investigate the temperature and physical properties of Eur...
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