NISER

2006-2008, MSc Geology, Bundelkhand University, Jhansi, India

2012-2015, PhD, Max Planck Institute for Solar System Research/ Clausthal University of Technology, Germany

2015-2019, Postdoc, Max Planck Institute for Solar System Research, Germany

• Study of planetary surface mineralogy and geology using remote sensing multi- and hyper-spectral data

2025

• S Dhoundiyal, MS Dey, S Singh, PV Arun, G Thangjam, A Porwal, 2025. Explainable machine learning for mapping minerals from CRISM hyperspectral data. Journal of Geophysical Research: Machine Learning and Computation, 2, 2, e2024JH000391
• R Sarkar, A Nathues, M Hoffmann, E Cloutis, K Mengel, P Singh, G Thangjam, J Hernandez, S Karunatillake, M Coutelier, 2025. Ceres: Organic‐Rich Sites of Exogenic Origin? AGU Advances, 6, 1, e2024AV001362
• D Paul, S Dhoundiyal, A Porwal, G Thangjam, 2025. Compositional mapping and geological age of the mare basalts of the southern quadrangle of Moon. 
  Planetary and Space Science 256, 106034

2024

• Dhoundiyal S., Kumar S., Paul D., Aranha M., Porwal A., Thangjam G., 2024. Feature Engineering for estimating the maturity of lunar soils from spectroscopic data. Ore and Energy Resource Geology, 17, 100064.
• A Nathues, M Hoffmann, R Sarkar, P Singh, J Hernandez, JH Pasckert, N Schmedemann, G Thangjam, E Cloutis, K Mengel, M Coutelier, 2024. Consus Crater on Ceres: Ammonium‐Enriched Brines in Exchange With Phyllosilicates? Journal of Geophysical Research: Planets, 129, 9.
• Kovács G., Nathues A., Sierks H., Gutiérrez Marqués P., Hoffmann M., Thangjam G., 2024. The Scientific Calibration of the Dawn Framing Camera. Space Science Reviews 220 (1), 4, https://link.springer.com/article/10.1007/s11214-023-01039-w
• Paul D., Dhoundiyal S., Aranha M., Porwal A., Thangjam G., 2024. Compositional variation and petrogenesis of mare basalts in the Humorum basin: New insights from spectral analysis and crater counting. Icarus 409, 115865, https://www.sciencedirect.com/science/article/pii/S001910352300444X

2023

• Dhoundiyal S., Porwal A., Niveditha C.V., Thangjam G., Aranha M., Kumar S., Paul D., Kalimuthu R., 2023. A novel algorithm for mapping carbonates using CRISM hyperspectral data. Icarus,  397, 115504, https://doi.org/10.1016/j.icarus.2023.115504

2022

• Hernandez J., Nathues A., Hiesinger H., Goetz W., Hoffmann H., Schmedemann N., Thangjam G., Mengel K., Sarkar R., 2022. Geology and colour of Kupalo crater on Ceres. Planetary and Space Science, 220, 105538.
• Nathues A., Hoffmann M., Schmedemann N., Sarkar R., Thangjam G., Mengel K., Hernandez J., Hiesinger H. & Pasckert J. H., 2022. Brine residues and organics in the Urvara basin on Ceres. Nature Communications, 13, 927.
• Castillo-Rogez J., Neveu M., Vinogradoff V., Miller K.E., Sori M.M., Tosi F., Schmidt B., Scully J.E.C, Daswani M.M., Hughson K., McSween H., De Sanctis C.M., Quick L., Ermakov N., Thangjam G., Otto K., Krohn K., Schenk P., Nathues A., Raymond C., 2022. Science Drivers for the Future Exploration of Ceres: From Solar System Evolution to Ocean World Science. Planetary Science Journal, 3, 64.

2021

• Shi X., et al. and GAUSS team (Thangjam G., in GAUSS team). GAUSS - genesis of asteroids and evolution of the solar system: A sample return mission to Ceres. Experimental Astronomy, 2021. 10.1007/s10686-021-09800-1.

2020

• A. Nathues, N. Schmedemann, G. Thangjam, J. H. Pasckert, K. Mengel, J. Castillo-Rogez, E. A. Cloutis, H. Hiesinger, M. Hoffmann, L. Le Corre, J.-Y. Li, C. Pieters, C. A. Raymond, V. Reddy, O. Ruesch & D. A. Williams, 2020. Recent cryovolcanic activity at Occator crater on Ceres. Nature Astronomy, 4, 794–801. (appeared in Cover Page).

2019

• Nathues A., Hoffmann M., Ripken J., Thangjam G., Platz T., Schmedemann N., Takir D, (2019). Unique light scattering at Occator's faculae on (1) Ceres. The Astronomical Journal. 158, 85.
• Nathues A., Platz Th., Thangjam G., Nathues A., Hoffmann, M., Scully J.E.C., Stein N., Ruesch O., K. Mengel, 2019. Occator Crater in Color at Highest Spatial Resolution. Icarus, 320, 24-38.
• Sizemore H. G., Schmidt B. E., Buczkowski D. A., Sori M. M., Castillo-Rogez J. C. , Berman D. C., Ahrens C., Chilton H. T., Hughson K. H. G., Duarte K., Otto K. A., Bland M.T., Neesemann A., Scully J. E. C., Crown D. A. Crown, Mest S. C., Williams D. A., Platz T., Schenk P.,, Landis M. E, Marchi S., Schorghofer N. Quick L.C.,, Prettyman T.H., De Sanctis M. C., Nass A. Nass, G. Thangjam G., Nathues A., Russell C.T., Raymond C.A, 2019. A Global Inventory of Ice-Related Morphological Features on Dwarf Planet Ceres: Implications for the evolution and current state of the cryosphere. Journal of Geophysical Research, 124, 7, 1650-1689.
• Combe J-Ph., Raponi A., Tosi F., De Sanctis M.C., Carrozzo F.G., Zambon F., Ammannito E., Hughson K.H.G, Nathues A., Hoffmann M, Platz Th., Thangjam G., Schorghofer N., Schröder S., Byrne S., Landis M.E., Ruesch O., McCord T., Johnson K.E., Singh S.M., Raymond C.A., Russell C.T, 2019. Exposed H2O-rich areas detected on Ceres with the Dawn Visible and InfraRed mapping spectrometer. Icarus, 318, 22-41.
• Francesca Z., Carrozzo F.G., Tosi F., Ciarniello M., Combe J. Ph., Frigeri A., De Sanctis M.C., Thangjam G., Nathues A., Hoffmann M., Longobardo A., Stephan K., Raponi A., Ammannito E., Krohn K., McFadden L.A., Palomba E., Raymond C.A., Russell C.T. 2018. The Dawn Science Team. Mineralogic mapping of Rongo quadrangle on Ceres. Icarus, 318, 212-229.
• Tosi F., F.G. Carrozzo, F. Zambon, M. Ciarniello, A. Frigeri, J.-Ph. Combe, M.C. De Sanctis, M. Hoffmann, A. Longobardo, A. Nathues, A. Raponi, G. Thangjam, E. Ammannito, K. Krohn, L.A. McFadden, E. Palomba, C.M. Pieters, K. Stephan, C.A. Raymond, C.T. Russell, 2019. The Dawn Science Team, et al. Mineralogical Analysis of the Haulani Quadrangle of the Dwarf Planet Ceres. Icarus, 318, 170-187.

2018

• Thangjam G., Nathues A., Platz T., Hoffmann M., Cloutis E. A., Mengel K., Izawa M. R. M., Applin D. M. 2019. Spectral properties and geology of bright and dark materials on dwarf planet Ceres. Meteoritics and Planetary Science, Volume53, Issue 9, Pages 1961-1982
• Pieters C.M., Nathues A., Thangjam G., Hoffmann M., Platz T., De Sanctis M. C., Ammannito E., Tosi F., Zambon Pasckert F, J. H., Hiesinger H., Schröder S. E., Jaumann R., Matz K-D., Castillo-Rogez J. C., Ruesch O., McFadden L. A., O'Brien D. P, Sykes M., Raymond C. A., Russell C. T, 2018. Geologic context of unusual organic-rich areas on Ceres, Meteoritics and Planetary Science, 53 (9), 1983-1998.
• Bhatt M., Wohler C., Dhingra D., Thangjam G., Rommel D., Mall U., Bhardwaj A., Grumpe A. (2018) Compositional studies of Mare Moscoviense: New perspectives from Chandrayaan-1 VIS-NIR data. Icarus, 305, 149-165.
• Tosi F., Carrozzo F.G., Raponi A., De Sanctis M.C., Thangjam G., Zambon F., Ciarniello M., Nathues A., Hoffmann M., Frigeri A., Ammannito E., Krohn K., Longobardo A., Palomba E., Pieters C.M., Stephan K., Raymond C.A., Russell C.T, 2018. Mineralogy of Haulani crater on Ceres. Meteoritics and Planetary Science, 318, 170-187.
• Williams, D.A., Kneissl T., Neesemann A., Mest S.C., Palomba E., Platz T., Nathues A., Longobardo A., Scully J.E.C., Ermakov A., Jaumann R., Buczkowski D.L., Schäfer M., Thangjam G., Pieters C.M., Roatsch T., Preusker F., Marchi S., Schmedemann N., Hiesinger H., Frigeri A., Raymond C.A., Russell C.T., (2018). The geology of the kerwan quadrangle of dwarf planet Ceres: investigating Ceres' oldest impact basin. Icarus, 316, 99-113.

2017

• Nathues A., Platz T., Hoffmann, M., Thangjam G., E. A. Cloutis, D. M. Applin, L. Le Corre, V. Reddy, K. Mengel, S. Protopapa, D. Takir, F. Preusker, B. E. Schmidt, and C. T. Russell, (2017). Oxo crater on (1) Ceres: geological history and the role of water-ice. Astronomical Journal 154, 84.
• Nathues A., Platz T., Thangjam G., Hoffmann M., Mengel K., Cloutis E.A., Corre L. Le, Reddy V., Kallisch J., Crown A.D., (2017). Evolution of Occator Crater on (1) Ceres. Astronomical Journal, 153, 112.

2016

• Thangjam G., Hoffmann M., Nathues A., Li J.-Y., Platz T. (2016). Haze at Occator crater on Ceres. Astrophysical Journal Letters, 833, L25.
• Platz T., Nathues A., Schorghofer N., Preusker F., Mazarico E., Schröder S. E., Byrne S., Kneissl T., Schmedemann N., Combe J.-P., Schäfer M., Thangjam G. S., Hoffmann M., Gutierrez-Marques P., Landis M. E., Dietrich W., Ripken J., Matz K.-D. & Russell C.T., (2016). Surface water-ice deposits in the northern shadowed regions of Ceres. Nature Astronomy, 1, 0007.
• Nathues A., Hoffmann M., Platz T., Thangjam G., Cloutis E.A., Reddy V., Le Corre L., Li J.-Y., Mengel K., Rivkin A., Applin D.M., Schaefer M., Christensen U., Sierks H., Ripken J., Schmidt B.E., Hiesinger H., Sykes M.V., Sizemore H.G., Preusker F., Russell C.T., (2016). Colour Images of Dwarf Planet Ceres Reveal a Complicated Geological History. Planetary and Space Science, 134, 122-127.
• Izawa M. R. M., Schäfer T., Pietrasz V.B, Mann P., Cloutis E.A., Nathues A., Mengel K., Schäfer M., Thangjam G., Hoffmann M., Tait K.T., Applin D.M., (2016). Effects of viewing geometry, aggregation state, and particle size on reflectance spectra of the Murchison CM2 chondrite in preparation for the Dawn encounter with Ceres. Icarus, 266, 235-248.

2015:

• Thangjam G., Nathues A., Mengel K., Schäfer M., Hoffmann M., Cloutis E.A., Mann P., Müller C., Platz T., Schäfer T., (2015/2016). Three-dimensional spectral analysis of compositional heterogeneity at Arruntia crater on (4) Vesta using Dawn FC. Icarus, 267, 344-363.
• Nathues A., Hoffmann M., Schaefer M, Le Corre L., Reddy V., Platz T., Cloutis E. A., Christensen U., Kneissl T., Li J.-Y., Mengel K., Schmedemann N., Schaefer T., Russell C. T., Applin D. M., Buczkowski D. L., Izawa M. R. M., Keller H. U., O'Brien D. P., Pieters C. M., Raymond C. A., Ripken J., Schenk P. M., Schmidt B. E., Sierks H., Sykes M. V., Thangjam G. S., Vincent J.-B., (2015). Sublimation in bright spots on Ceres. Nature, 528, 237-240.
• Nathues A., Hoffmann M., Schäfer M., Thangjam G., Le Corre L., Reddy V., Christensen U., Mengel K., Sierks H., Vincent J.-B., Cloutis E.A., Russell C.T., Schäfer T., Gutierrez-Marques P., Hall I., Ripken J., Büttner I., (2015). Exogenic olivine on Vesta from Dawn Framing Camera color data. Icarus, 258, 467-482.

2014:

• Thangjam G., Nathues A., Mengel K., Hoffmann M., Schäfer M., Reddy V., Cloutis E.A., Christensen U., Sierks H., Le Corre L., Vincent J.-B., Russell C. T., (2014). Olivine-rich exposures at Bellicia and Arruntia craters on (4) Vesta from Dawn FC. Meteoritics and Planetary Science, 49, 10, 1831-1850.
• Nathues A., Hoffmann M., Cloutis E.A., Schäfer M., Reddy V., Christensen U., Sierks H., Thangjam G.S., Le Corre L., Mengel K., Vincent J.-B., Russell C.T., Prettyman T., Schmedemann N., Kneissl T., Raymond C., Gutierrez-Marques P., Hall I., Büttner I., (2014). Detection of serpentine in exogenic carbonaceous chondrite material on Vesta from Dawn FC data. Icarus, 239, 222-237.
• Schäfer M, Nathues A., Williams D.A., Mittlefehldt D.W., Le Corre L., Buczkowski D.L., Kneissl T., Thangjam G.S., Hoffmann M., Schmedemann N., Schäfer T., Scully J.E.C., Li J.-Y., Reddy V., Garry W.B., Krohn K., Yingst R.A., Gaskell R.W., Russell C.T., (2014). Imprint of the Rheasilvia Impact on Vesta – Geologic Mapping of Quadrangles Gegania and Lucaria. Icarus, 244, 60-73.

2013:

• Thangjam G, Reddy V., Le Corre L., Nathues A., Sierks H., Hiesinger H., Li J.-Y., Sanchez J.A., Russell C.T., Gaskell R., Raymond C., (2013). Lithologic mapping of HED terrains on Vesta using Dawn Framing Camera color data. Meteoritics and Planetary Science, 48, 11, 2199-2210.

2012:

• Arya A.S., Rajasekhar R.P., Thangjam G., Gujrati A., Amitabh, Trivedi S., Krishna B.G., Ajai, Kiran Kumar A.S., (2012). Lunar surface age determination using Chandrayaan-1 TMC data, Current Science, 102, 5, 783-788.

2011:

• Arya A.S., Rajasekhar R.P., Thangjam G., Ajai, Kiran Kumar A.S., (2011). Detection of potential site for future human habitability on Moon using Chandrayaan-I data. Current Science, 100, 4, 524-529.

Research projects and opportunities (1 JRF position and 1 Internship for 6 months available in ISRO Chandrayaan-2 project;  Geo-science/Physics/Chemistry/Engineering/Computer-Science/Mathematics background who has interest to work on basic science problems):

Project: Chandrayaan-II IIRS science project, specifically working on potential lunar mantle compositions in the South Pole Aiken basin, and also understanding lunar water/hydroxyl absorption feature at 3 micron; ISRO AO Ch-2 project

• Nature of work: Data processing and calibration of Chandrayaan-II IIRS hyperspectral data- feature-offset or georeferenceing problem, the thermal and then the photometric correction; Data analysis and spectral investigation especially the 1, 2, and 3 micron feature
• Work is computational in nature, with physical and statistical equations/algorithms/approach

Areas of interest and plan:

Applied spectroscopy and planetary surface mineralogy (using spectral data-- Lunar M3, IIRS, Ceres VIR, Venus VIRTIS, Mars CRISM data, and using remote sensing software and python and shell scripting)

Experimental spectroscopy and mineral sciences understanding the basic physics and chemistry of mineral spectral features, especially the Electronic and Vibrational processes (using FTIR, Raman, XRD)

Experimental mineralogy and crystal chemistry of aqueous minerals, especially the phyllosilicates, carbonates, sulphates (using XRD, Raman, SEM/EDS)

Few questions of interest:

Water (OH/H2O) on Moon: What is the physical and chemical state-- structural or molecular or ice/frost or other? How wet or dry is the Moon? What it implies in terms of lunar evolution and the solar system context?

Missing mantle material of Moon: Is mantle material exposed in the South Pole Aitken basin? Is it olivine-rich or Mg-rich orthopyroxene? What it implies toward the geologic evolution of so-called differentiated planetary bodies?

Asteroid Ceres -- formed in the inner or outer solar system? Is this question solely depend on the detection of ammoniated-phyllosilicates because of 3.1 micron feature? If so, what is the uncertainty in NH4+ feature detection? And, what are the physical and chemical rationality for the origin either in the inner or outer solar system? What it implies in the solar system / ocean worlds / exo-planetary exploration?

Venus surface and geology -- active or not? What are the surface/sub-surface processes and links to volcanism and tectonism? How the surface science is coupled with atmosphere? How the surface mineralogy and processes could tell about the Venusian geologic evolution and what it implies in the solar-system / exoplanetary / Ocean worlds exploration and habitability?

Carbonate conundrum on Mars --  Why carbonates are missed on Mars-- is it observational issue or geologic issue by nature that is not understood? How the enrichment in sulphates is linked? What it implies in the Martian geology and atmosphere and in the the solar system context?

Understanding crystal chemistry and mineralogy of aqueous minerals, especially phyllosilicates, carbonates and sulphates enriched in OH/H2O and salts -- What is the physical and chemical state of the cationic and anioinic complex? What does the earliest formed aqueous minerals in the solar system imply in terms of the physical and chemical state?

EP601 (Introduction to Earth Science, PhD core course; Shared with Dr. Bhattacharyya)

EP603 (Introduction to Planetary Science; PhD core course; Shared with Dr. Majumdar)

EP641 (Practical course; PhD core course)

EP700 (Research methodology; Research ethics, Plagiarism, and scientific works; shared with Dr. Bhattacharyya)

EP685 (Planetary Surface process; PhD elective course)

EP651 (Mineralogy and crystallography; PhD elective course)

EP700 (Research ethics and methodology, including Numerical/Computational part of EP642)

• Institute Library Committee member
• Departmental PhD/PG coordinator