Dr. Kuljeet Kaur Marhas

Section Head,Planetary Laboratory Analysis Section
Planetary Sciences Division, Ahmedabad
E-mail: kkmarhas(at)
Telephone: +91-079-26314332

Research Interests

  • Isotope Cosmochemistry
  • Stellar Evolution and Nucleosynthesis
  • Origin and Early Evolution of the Solar System and its planetary bodies

Current Research Activities

  • Short-Lived now extinct radionuclides in early Solar System
  • Organics in primitive meteorites
  • Secondary alteration processes in meteorites
  • Heavy element Nucleosynthesis in AGB stars
  • Study of grains from Itokawa Asteroid (Hayabusa I)
  • Model for grain destruction in Inter-stellar Medium
  • Interstellar dust grain from upper atmosphere

Laboratory Facilities

  • Nano Secondary Ion Mass Spectrometer (nanoSIMS)
  • Class 1000 clean chemistry laboratory for Extra-terrestrial materials
  • Sample processing laboratory

Academic Qualifications

  • 1996-2001:   Ph.D., Physical Research Laboratory, Ahmedabad, India
  • 1993-1995:   M.Sc., Devi Ahilya Vishwavidyalaya, Indore, M.P, India
  • 1990-1993:   B.Sc., Holkar Science College, Indore, M.P, India

Professional Experience

  • 2022-2023:   Fulbright Fellow,   Carnegie Institute of Sciences, Washington D.C., USA
  • 2020-Present:   Professor,   Physical Research Laboratory, Ahmedabad, India
  • 2013-2020:   Associate Professor,   Physical Research Laboratory, Ahmedabad, India
  • 2014-2015:   Visiting Scientist,   Astromaterials Research and Exploration Science,   NASA Johnson Space Center , Houston, USA
  • 2007-2013:   Reader,   Physical Research Laboratory, Ahmedabad, India
  • 2005-2007:   Research Associate,   McDonnell Center for the Space Sciences, Washington University, St. Louis, USA
  • 2002-2005:   Postdoctoral Fellow,   Max-Planck-Institut für Chemie, Mainz, Germany
  • 2001-2002:   Postdoctoral Fellow,   Physical Research Laboratory, Ahmedabad, India


  • Fulbright-Nehru Academic and Professional Excellence Award, United States-India educational foundation, 2022-23
  • SERB POWER Fellow, Department of Science & Technology, India, 2021
  • Fellow, American Geophysical Union, 2019
  • Devendra Lal Memorial Medal: American Geophysical Union, 2019
  • Eminent Mass Spectrometrist: Indian Society of Mass Spectrometry , 2019
  • Kavli fellow of the U.S. National Academy of Sciences, 2015
  • Women Excellence Award: Science and Engineering Research Board (SERB) Department of Science & Technology, India, 2013
  • Member of STARDUST preliminary examination (cometary sample return mission) team, 2006
  • INSA Young Scientist Award: presented by Indian National Science Academy, India, 2004

Professional Services

  • Nominating Committee, Meteoritical society 2023-2024
  • Council member, Meteoritical society 2018-2022
  • NASA Review Panelist
  • Scientific advisor board, Astronomy with Radioactive Isotopes, Budapest, Hungary 2020
  • Scientific advisor board, Meteoritical society meeting, Japan 2019
  • Co-convener: Workshop on the theme: Role of sample return in addressing major outstanding questions in Planetary Sciences, Bern, Switzerland, 2018.
  • Co-convener: Goldschmidt conference, for session titled: Presolar Grains and Isotopic Heterogeneity in Planetary Materials, Paris, France, 2017
  • Convened a meeting on: Search for micro-organisms in space, September 2016, sponsored by ISRO at Physical Research Laboratory, Ahmedabad, 2016

Research Grants

  • Co-PI, "The origin and evolution of large carbonaceous molecules in our solar system" (2022-2023)
    Hayabusa 2 sample return mission. JAXA curation center
  • PI, "Organics in meteorites: Understanding the parent body processes in the early solar system" (2023-2026)
    Department of Science & Technology, India [CRG/2022/009047]
  • PI, "Nascent Sun: Solar flares and million year old protoplanetary disk" (2021-2024)
    SERB-POWER Fellowship, Science and Engineering Research Board-Promoting Opportunities for Women in Exploratory Research
    Department of Science & Technology, India [SPF/2021/000116]
  • PI, "High precision Chronology of refractory Inclusions from primitive chondrites" (2021-2024)
    CEFIPRA, Indo French Centre for the Promotion of Advanced Research [6407-A]
  • Co-PI, "Chronology, evolution of CAIs in Ordinary chondrites" (2021-2022)
    Europlanet 2024 RI -Research Infrastructure [20-EPN2-036]
  • PI, "Stellar nucleosynthesis of transition elements" (2013-2016)
    SERB, Science and Engineering Research Board, Department of Science & Technology, India [SB/WEA-007/2013]

Group Members

  • Vikram Goyal, Sr. Scientific Assistant
  • Shreeya Natrajan, Scientist/Engineer'SC
  • Dr. Manish Sanghani(2021-22), Post Doctoral Fellow
  • Dr. Rahul Das Gupta(2021-22), Research Associate
  • Advait Unnithan, Junior Research Fellow
  • Ankit Prakash Singh, Junior Research Fellow
  • Neha, Junior Research Fellow

Teaching Experiences

  • Cosmochemistry: Basics and advance courses
  • Instrumentation and Vacuum technology
  • Nucleosynthesis:Evolution of elements
  • Nuclear Physics

Recent Publications

  • 26Al-26Mg isotopic studies in some calcium-aluminium-rich inclusions and chondrules from unequilibrated chondrites.
    RK Mishra, K. K. Marhas M Trieloff
    Current Science 125 (2), 191-203 DOI : 10.18520/cs/v125/i2/191-203
  • Microstructural and Chemical Investigations of Presolar Silicates from Asymptotic Giant Branch Stars and Type-II Supernova Explosions.
    M. N. Sanghani#, L. Lajaunie, K. K. Marhas W. D.A. Rickard, S. S.-Y. Hsiao, Z. Peeters, H. Shang, D.-C. Lee J. J. Calvino and M. Bizzarro
    The Astrophysical Journal, 925: 110 DOI :
  • Presolar silicate and oxide grains found in lithic clasts from Isheyevo and fine grained matrices of NWA 801
    M. N. Sanghani#, K. K. Marhas S. S.-Y. Hsiao, Z. Peeters, H. Shang, D.-C. Lee, and M. Bizzarro
    The Astrophysical Journal Supplement Series, 253:41, 2021 DOI :
  • Sputtering of presolar grains via Galactic Cosmic Rays in the Interstellar medium
    A. Garg*, K. K. Marhas and V. Goyal
    The Astrophysical Journal, 905:80, 2020 DOI:
  • Meteoritic evidences of a late superflare as a source of 7Be in the early Solar System
    R. K. Mishra and K. K. Marhas
    Nature Astronomy,3:498, 2019, DOI:
  • Transition elements in Supernova presolar grains: Condensation vs. Implantation
    K. K. Marhas and P. Sharda*
    The Astrophysical Journal, 853:12, 2018, DOI:
  • Correlated silicon and titanium isotopic compositions of presolar SiC grains from the Murchison CM2
    F. Gyngard S. Amari, Zinner E. and K. K. Marhas
    Geochim. Cosmochim. Acta, 221:145, 2018, DOI:
(*Summer Intern; #Research Scholar co-advised)

Book Edited:
  • Role of Sample Return in Addressing Major Questions in Planetary Sciences.
    Editors: M. Anand, S. Russell, Y. Lin, M. Wadhwa, K. K. Marhas , S. Tachibana
    Space Sci Rev (2020) 216:101


Dr. Kuljeet K Marhas,
Planetary Science Division,
Physical Research Laboratory
Navrangpura, Ahmedabad,
Office Phone : +91-79-26314332
Email ID : [email protected]
Web Page :
Section : PLAS (Webpage under Construction)