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PSI Staff Directory

Staff Photo

PSI members at retreat, left to right, Front Row (seated): Georgiana Kramer & Gozer, Amber Grav, Tommy Grav and son Ragnar (2), Sarah Sonnett and daughter Djuna (4), Eva Lilly with Elizabeth (3), Xiao-Duan Zou and daughter Peggy (4). 2nd Row: Mark Sykes, Susie Murph, Elisabeth Adams, Emilie Royer, Candy Hansen (seated), Dorothy Oehler (seated), Amanda Hendrix (seated), Kristina Lopez (seated), Sanlyn Buxner, Kelly Yoder, Kimberly Foote. 3rd Row: Amanda Sickafoose, Oz Pathare, Bea Mueller, Dan Berman, Bruce Barnett, Darby Dyar. 4th Row: Bill Feldman, Chun Wu, Amara Graps. 5th Row: David Hornisher, Jim Richardson, Jr. , Joe Spitale, Thea Cañizo. 6th Row: Jesse Stone, Gavin Nelson, Frank Chuang, Hanna Sizemore, Cindy Little,Henry Hsieh, Roger Clark. 7th Row: Sam Courville, Neil Pearson, Liz Jensen, Steve Clifford. 8th Row: Steve Wood, John Weirich, Yuki Yamashita. 9th Row: Stu Weidenschilling, Than Putzig, Norbert Schorghofer. 10th Row: Alan Fischer, Gareth Morgan, Kevin Webster, Lauren Giebler. 11th Row: Bob Nelson, Oleg Abramov, Eric Palmer, Alexis Rodriguez. Left Balcony: Stephen Scheidt, Scott Mest, Mike Drum, Matt Perry, Dianne Janis, Chris Holmberg, Zach Bain, Annie Wilson, Pamela Gay, Larry Lebofsky, Jeff Morgenthaler, Tom Prettyman, Bryan Travis. Right Balcony: Terrill Yuhas, Julianne Herrera, Ed Jackson (crouching), Maui Balistreri (crouching), Nick Ambrose, Dave Vaniman, Nalin Samarasinha, Ed Tedesco, Patricia Craig, Deborah Domingue, Jeff Kargel, Gretchen Benedix, Pasquale Tricarico, Faith Vilas, and Linda Rueger. Photograph by Gil Esquerdo.

NOTE: An asterisk (*) after a name denotes that an asteroid has been named in their honor. Click on the asterisk to view full details of the designation.

Name Title Location
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Dr. Nathaniel Putzig
Senior Scientist Lakewood, CO
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Dr. Julie Rathbun
Senior Scientist Ithaca, NY
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Dr. Robert Reedy
Senior Scientist Emeritus Los Alamos, NM
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Dr. Jim Rice
Senior Scientist Scottsdale, AZ
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Dr. Matthew Richardson
Postdoctoral Research Scientist Clarksville, TN
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Dr. James E. Richardson Jr.
Senior Scientist South Bend, IN
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Dr. Alexis Palmero Rodriguez
Senior Scientist Tucson, AZ
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Dr. Tamara Rogers
Senior Scientist Newcastle, United Kingdom
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Dr. Emilie Royer
Research Scientist Broomfield, CO
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Linda Rueger
Human Resources Manager Tucson, AZ
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Dr. Nalin Samarasinha
Senior Scientist Tucson, AZ
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Dr. Juan Sanchez
Associate Research Scientist Tucson, AZ
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Dr. Stephen Scheidt
Associate Research Scientist Odenton, MD
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Dr. Norbert Schorghofer
Senior Scientist Honolulu, HI
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Dr. Amanda Sickafoose
Senior Scientist Cape Town, South Africa
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Dr. Matt Siegler
Research Scientist Dallas, TX
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Dr. Hanna Sizemore
Senior Scientist Marlinton, WV
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Dr. Elizabeth Sklute
Research Scientist Granby, MA
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Dr. Isaac B. Smith
Research Scientist Ontario, Canada
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Dr. Luke Sollitt
Senior Scientist Mt. Pleasant, SC
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Dr. Sarah Sonnett
Research Scientist Mt. Pleasant, SC
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Dr. Joe Spitale
Senior Scientist Tucson, AZ
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Dr. Matthew Staid
Senior Scientist Angwin, CA
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Dr. Jordan Steckloff
Research Scientist Whitmore Lake, MI
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Jesse Stone
Software Developer Tucson, AZ
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Dr. Mark Sykes
PSI CEO & Director Tucson, AZ
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Dr. Sugata Tan
Senior Scientist Laramie, WY
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Dr. Ed Tedesco
Senior Scientist Los Lunas, NM
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Dr. Michelle Thomsen
Senior Scientist Los Alamos, NM
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Mattie Tigges
Research Assistant, Junior Tucson, AZ
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Dr. Robert Tokar
Senior Scientist Santa Fe, NM
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Tim Torres
Junior Software Programmer Alton, IL
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Dr. Bryan Travis
Senior Scientist Los Alamos, NM
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Dr. Pasquale Tricarico
Senior Scientist Bouchemaine, France
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Dr. David Vaniman
Senior Scientist Sacramento, CA
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Dr. Faith Vilas
Senior Scientist Seabrook, TX
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Dr. Ryan Clegg Watkins
Research Scientist St. Louis, MO
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Dr. Kevin Webster
Associate Research Scientist Tucson, AZ
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Dr. Stu Weidenschilling
Senior Scientist Emeritus Tucson, AZ
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Dr. John Weirich
Postdoctoral Research Scientist Tucson, AZ
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Dr. Paul Weissman
Senior Scientist Pasadena, CA
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Dr. Cathy Weitz
Senior Scientist Arlington, VA
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Linda Welzenbach
Senior Research Associate Houston, TX
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Mackenzie White
Research Assistant San Antonio, TX
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Dr. Rebecca Williams
Senior Scientist Waunakee, WI
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Bailey Williamson
Research Assistant, Junior Charleston, SC
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Annie Wilson
Communication Specialist Youngstown, OH
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Jason Witry
Research Assistant Charleston, SC
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Dr. Chuck Wood
Senior Scientist Wheeling, WV
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Dr. Stephen Wood
Senior Scientist Seattle, WA


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