Explanipedia

Bennu and Ryugu constituents from samples IR analyses and potential source of terrestrial planets’ ingredients Open

C. Pilorget, Tatsuaki Okada, J.-P. Bibring, D. Loizeau, Kentaro Hatakeda , et al. · 2025

JAXA curation for Bennu samples returned by the NASA 's OSIRIS ‐ REx mission Open

Rui Tahara, Kentaro Hatakeda, Masahiro Nishimura, Kasumi Yogata, Ryota Fukai , et al. · 2025

NASA's OSIRIS‐REx mission successfully collected and returned ~121.6 g of bulk samples from the B‐type, near‐Earth asteroid (101955) Bennu to Earth in September 2023. Upon returning to Earth, the samples were transported to the NASA Johnso…

Sulfate can obscure spectral evidence of carbonate: MicrOmega observations with implications for Mars Open

Rachel Y. Sheppard, D. Loizeau, A. A. Fraeman, Elizabeth Rampe, C. Pilorget , et al. · 2025

Introduction: The Fe-carbonate siderite has been detected in Gale crater by the CheMin instrument onboard the Curiosity rover at concentrations up to ~10.5 wt% [1,2] (Fig. 1, red stars). However, it remains undetected in orbital spectral d…

Characterization of hydrated phosphorous-rich material within Bennu returned samples using near-infrared to mid-infrared spectra Open

Rachel Y. Sheppard, C. Pilorget, D. Baklouti, D. Loizeau, Te Jiang , et al. · 2025

Introduction: Samples returned from the asteroid Bennu by NASA’s OSIRIS-REx mission [1], and previously from the asteroid Ryugu by JAXA’s Hayabusa2 mission [2], offer unprecedented access to pristine carbonaceous asteroid material, preserv…

Spectral variations of phyllosilicate features in Bennu grains: evidence from NIR and MIR measurements of pristine returned samples at ISAS Curation Facility. Open

L. Nardelli, R. Brunetto, C. Pilorget, Kentaro Hatakeda · 2025

Introduction: Carbonaceous asteroid samples offer a unique opportunity to access primitive materials from the early solar system. Alteration processes that occurred during the evolution of asteroids and their parent bodies have affected th…

Mg-sulfate can spectrally obscure siderite: implications for martian surface carbonates Open

Rachel Y. Sheppard, D. Loizeau, A. A. Fraeman, E. B. Rampe, C. Pilorget , et al. · 2025

Introduction The search for carbonates on the martian surface has been ongoing since the Viking missions. Recently the Curiosity rover observed carbonate in situ in Gale crater, however it is not visible from orbit. This study investigates…

The mineralogical composition of Jezero Crater Western Fan: Multigaussian modeling of Perseverance/SuperCam near-infrared observations and overview of major units Open

Clément Royer, F. Poulet, R. C. Wiens, Franck Montmessin, Pierre Beck , et al. · 2025

From hydrated silica to quartz: Potential hydrothermal precipitates found in Jezero crater, Mars Open

Pierre Beck, O. Beyssac, E. Dehouck, S. A. Bernard, Maxime Pineau , et al. · 2025

Calibration of MAJIS (Moons And Jupiter Imaging Spectrometer). I. On-ground setup description and characterization Open

M. Vincendon, Pierre Guiot, Benoît Lecomte, Mathieu Condamin, F. Poulet , et al. · 2024

The visible and infrared Moon And Jupiter Imaging Spectrometer (MAJIS), aboard the JUpiter ICy Moons Explorer (JUICE) spacecraft, will characterize the composition of the surfaces and atmospheres of the Jupiter system. Prior to the launch,…

Phosphorus-rich grains in Ryugu samples with major biochemical potential Open

C. Pilorget, D. Baklouti, Jean‐Pierre Bibring, R. Brunetto, Motoo Ito , et al. · 2024

Aqueous alteration of Ryugu's parent body: Insights from carbonates seen by MicrOmega Open

Max Mahlke, C. Lantz, C. Pilorget, Jean‐Pierre Bibring, Alice Aléon‐Toppani , et al. · 2024

Carbonate minerals are tracers of the chemical and temporal evolution of aqueous alteration on the parent bodies of meteorites, in particular of the hydrated CI and CM carbonaceous chondrites. While principal differences in the carbonate a…

CALICO - a Mission Proposal to Explore Ceres In Situ Open

A. Hagermann, Stefan Schroeder, R. Buchwald, Tara-Marie Bründl, M. Küppers , et al. · 2024

The Ceres Autonomous Lander Into Crater Occator (CALICO) was proposed in response to ESA’s M7-call for future space missions. CALICO is a mission to study the surface and interior of dwarf planet Ceres, the closest ocean world to Ear…

Spectroscopic Characterization and Evolution of Martian Nighttime CO2 Frost at Equatorial Latitudes with EMM/EMIRS Open

Aurélien Stcherbinine, Christopher S. Edwards, C. W. Haberle, M. D. Smith, Lucas Lange , et al. · 2024

IntroductionThe Emirates Mars InfraRed Spectrometer (EMIRS) instrument onboard the Emirates Mars Mission (EMM) “Hope” probe is a Fourier Transform Infrared spectrometer that has been observing the Martian surface and atmosphere…

Spectral variations of the 2.7 µm feature at sub-mm scales in Ryugu samples, within the ISAS Curation Facility Open

Tania Le Pivert-Jolivet, Lucie Riu, R. Brunetto, C. Pilorget, D. Baklouti , et al. · 2024

In December 2020, the Hayabusa2/JAXA mission returned to Earth ~5.4g of primitive material from the carbonaceous asteroid (162173) Ryugu. Since their return, the samples are stored and analysed in the ISAS (Institute of Space and Astronaut…

Mineralogical approach on laboratory weathering of uncontaminated Ryugu particles: Comparison with Orgueil and perspective for storage and analysis Open

Naoya Imae, Naotaka Tomioka, Masayuki Uesugi, Makoto Kimura, A. Yamaguchi , et al. · 2024

Although CI chondrites are susceptible to terrestrial weathering on Earth, the specific processes are unknown. To elucidate the weathering mechanism, we conduct a laboratory experiment using pristine particles from asteroid Ryugu. Air‐expo…

Moons and Jupiter Imaging Spectrometer (MAJIS) on Jupiter Icy Moons Explorer (JUICE) Open

F. Poulet, G. Piccioni, Y. Langevin, Cydalise Dumesnil, Leonardo Tommasi , et al. · 2024

The CNME Project, a National Curation Center for Extraterrestrial Samples in France Open

J. Duprat, J-C. Viennet, Mathieu Roskosz, M. Morand, Silvia Boccato , et al. · 2024

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CHEMISTRY AND MINERALOGY OF THE MARGIN UNIT, JEZERO CRATER, MARS, OBSERVED BY M2020 / SUPERCAM Open

R. C. Wiens, Elise Clavé, Pierre Beck, Clément Royer, C. C. Bedford , et al. · 2024

International audience

Monitoring the performances of MAJIS from ground to flight calibration measurements Open

Paolo Haffoud, Y. Langevin, F. Poulet, M. Vincendon, G. Filacchione , et al. · 2024

ESA’s Jupiter Icy Moons Explorer (JUICE) mission scientific payload includes a 2-channels (visible to near-infrared (VISNIR) and infrared (IR)) cryogenic imaging spectrometer instrument called the Moons And Jupiter Imaging Spec…

Calibration of MAJIS (Moons And Jupiter Imaging Spectrometer). III. Spectral calibration Open

Paolo Haffoud, F. Poulet, M. Vincendon, G. Filacchione, Alessandra Barbis , et al. · 2024

The Moons And Jupiter Imaging Spectrometer (MAJIS) is the visible and near-infrared imaging spectrometer onboard the European Space Agency (ESA)’s Jupiter Icy Moons Explorer mission. Before its integration into the spacecraft, the instrume…

Carbonation of mafic rocks in the Margin Unit, Jezero Crater, Mars Open

Elise Clavé, P. Beck, Olivier Beyssac, O. Forni, S. Schröder , et al. · 2024

International audience

Space weathering record and pristine state of Ryugu samples from MicrOmega spectral analysis Open

Tania Le Pivert-Jolivet, R. Brunetto, C. Pilorget, Jean‐Pierre Bibring, Aiko Nakato , et al. · 2023

Ryugu Sample Database System (RS-DBS) on the Data Archives and Transmission System (DARTS) by the JAXA curation Open

Masahiro Nishimura, Aiko Nakato, Masanao Abe, Kana Nagashima, Hiromichi Soejima , et al. · 2023

The JAXA Astromaterials Science Research Group developed a web-based database system for the Hayabusa2-returned samples from C-type asteroid Ryugu. The Ryugu Sample Database System database (RS-DBS) is designed as an online catalog for use…

Ryugu Sample Database System (RS-DBS) on the Data Archives and Transmission System (DARTS) by the JAXA curation Open

Masahiro Nishimura, Aiko Nakato, Masanao Abe, Kana Nagashima, Hiromichi Soejima , et al. · 2023

The JAXA Astromaterials Science Research Group developed a web-based database system for the Hayabusa2-returned sample from C-type asteroid Ryugu. The database (Ryugu Sample Database System; RS-DBS) is designed as an online catalog for use…

MASCOT’s in situ analysis of asteroid Ryugu in the context of regolith samples and remote sensing data returned by Hayabusa2 Open

Katharina A. Otto, Tra‐Mi Ho, Stephan Ulamec, Jean‐Pierre Bibring, Jens Biele , et al. · 2023

Variations of the surface characteristics of Ryugu returned samples Open

Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki , et al. · 2023

Hayabusa2 spacecraft successfully collected rock samples from the surface of C-type near-Earth asteroid 162173 Ryugu through two touchdowns and brought them back to Earth in 2020. At the Extraterrestrial Sample Curation Center in JAXA, we …

Coarse-grained olivine-rich regolith at jezero crater, mars: nature, source and transport Open

Olivier Beyssac, Baptiste Chide, A. Cousin, F. Ayoub, T. Bertrand , et al. · 2023

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Jezero Delta mineralogical diversity revealed by SuperCam infrared spectral modeling Open

Clément Royer, F. Poulet, R. C. Wiens, Lucia Mandon, Thierry Fouchet , et al. · 2023

International audience

Macromolecular organic matter in samples of the asteroid (162173) Ryugu Open

Hikaru Yabuta, George D. Cody, C. Engrand, Yoko Kebukawa, B. T. De Gregorio , et al. · 2023

Samples of the carbonaceous asteroid (162173) Ryugu were collected and brought to Earth by the Hayabusa2 spacecraft. We investigated the macromolecular organic matter in Ryugu samples and found that it contains aromatic and aliphatic carbo…

Constraints on Solar System early evolution by MicrOmega analysis of Ryugu carbonates Open

D. Loizeau, C. Pilorget, Lucie Riu, R. Brunetto, Jean‐Pierre Bibring , et al. · 2023

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