Planetary and Space Science最新文献

{"title":"Block-optimized FDAFT feature matching for lunar landing navigation and positioning: Validation with Chang'E−6 data","authors":"Shijie Liu ,&nbsp;Changding Xu ,&nbsp;Guanghan Chu ,&nbsp;Yubing Jiao ,&nbsp;Qian Huang ,&nbsp;Genyi Wan ,&nbsp;Baocheng Hua ,&nbsp;Tao Li ,&nbsp;Yusheng Xu ,&nbsp;Xiaohua Tong","doi":"10.1016/j.pss.2025.106221","DOIUrl":"10.1016/j.pss.2025.106221","url":null,"abstract":"<div><div>Lunar landing optical navigation and positioning is one of the key technologies of the lunar exploration mission. Landing images may exhibit low contrast, leading to weak internal texture features, and may also present significant radiometric discrepancies relative to the reference images. Traditional feature-matching methods are prone to mismatching, making it difficult to accurately determine the position of the lander. In this paper, a block-optimized FDAFT (BOFDAFT, Block-Optimized Fast Double-Channel Aggregated Feature Transform) feature matching algorithm is proposed, which is combined with a position estimation algorithm for lander position estimation. Additionally, a novel metric, referred to as Distribution Uniformity of Matched Points (DUMP), is proposed to quantify the spatial distribution uniformity of the matched points. By comparing with other matching methods, it is verified that the proposed matching algorithm is feasible in a variety of complex scenarios, and the method is validated by using simulation data and Chang'E−6 landing images. The average ratio of the magnitude of position deviation to the lander's altitude is 0.6 %, and the average reprojection absolute error in trajectory recovery of Chang'E−6 landing images is 1.77 pixels. This study has demonstrated the effectiveness of the proposed method for navigation and position in complex environments, which can provide technical support for future lunar exploration missions.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106221"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gamma radiolysis stability of citric acid-Fe3+-montmorillonite complexes: Implications for prebiotic chemistry","authors":"J. Cruz-Castañeda ,&nbsp;C. Fuentes-Carreón ,&nbsp;A. Heredia ,&nbsp;A. Meléndez-López","doi":"10.1016/j.pss.2025.106233","DOIUrl":"10.1016/j.pss.2025.106233","url":null,"abstract":"<div><div>Iron is widely distributed in natural environments and ubiquitous in clay minerals, which likely played a key role in abiotic processes on early Earth and some extraterrestrial bodies. To further understand this, we investigated the stability of citric acid-Fe³⁺-montmorillonite (CA-Fe-Mnt) complexes under gamma irradiation, highlighting their potential importance in prebiotic chemistry. Specifically, we studied the sorption dynamics between Fe³⁺-montmorillonite (Fe-Mnt) and citric acid (CA) at pH 2 and 6 for different time intervals (15–60 min) and tested for possible desorption using 0.1 mol L⁻¹ CaCl₂. ESI-HPLC-MS, ATR-FTIR, and XRD analyses revealed that CA chemisorbs onto Fe-Mnt, forming a stable, desorption-resistant complex, likely due to its strong coordination with interlayered iron cations. While citric acid in aqueous solution (5 × 10⁻⁴ mol L⁻¹) is highly susceptible to indirect water radiolysis persisting less than 2 % at 20 kGy, the CA-Fe-Mnt complex demonstrated robust stability under gamma irradiation (up to 40 kGy). However, the mineral matrix exhibited signs of structural degradation, evidenced by the loss of Si-O signal intensity observed by ATR-FTIR. This suggests that the organic matter is preserved at the cost of the mineral's structural order, which appears to dissipate the absorbed radiation through lattice degradation. These results suggest that clay-organic complexes may be a means of preserving organic matter in highly irradiated environments (<em>e.g</em>., hydrothermal systems, impact sites, and early Mars surfaces), providing new insights into the geochemical mechanisms of prebiotic preservation.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106233"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Orbit dissimilarity criteria in meteor showers: A comparative review","authors":"Ariane Courtot ,&nbsp;Patrick Shober ,&nbsp;Jérémie Vaubaillon","doi":"10.1016/j.pss.2025.106231","DOIUrl":"10.1016/j.pss.2025.106231","url":null,"abstract":"<div><div>In meteor science, the identification of meteor showers is a crucial and complex problem. The most common method is to perform a systematic search of a database of observed orbits using an orbit dissimilarity criterion (D-criterion) and an algorithm. D-criteria compare the result of an orbit dissimilarity function (D-function) and a threshold. These D-functions associate one value to two orbits. If this value is lower than the threshold, the orbits are considered similar. In this paper, we focus on the application of these D-criteria on meteoroid orbits. Group of meteors are thus formed using this method. However, not all D-criteria have been evaluated, and their high number makes it hard to know which should be prioritised. This paper presents a review of each D-function, the tests they passed, the threshold choice, and the algorithms they are used with. The aim is both to clearly present the state of the art on this question but also to analyse what studies are missing on this topic. We show what methods are currently used in the search for meteor showers, presenting statistics based on papers justifying the existence of established meteor showers. This paper presents a review of each D-functions from eight different papers. We describe how thresholds are usually chosen and what clustering algorithms can be used with D-criteria to form meteor groups. We also analyse tests that were performed on D-criteria, showing which results they were able to achieve and where they fell short. We discover that most of these criteria were not properly tested, and that some have been criticised for their theoretical background. Thus, we recommend performing a post-search analysis of the groups found, both in a statistical sense (to make sure the groups formed could not have been formed randomly) and an orbital dynamics sense (to check whether the group could indeed come from a singular parent body), to present the findings as potential meteor showers.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106231"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scribble-to-map: Geomorphological mapping of multi-class Martian landforms using scribble annotations and high-resolution DEMs","authors":"Rong Huang ,&nbsp;Peiqi Ye ,&nbsp;Yusheng Xu ,&nbsp;Puzuo Wang ,&nbsp;Leilei Jiao ,&nbsp;Yongjiu Feng ,&nbsp;Xiaohua Tong","doi":"10.1016/j.pss.2025.106230","DOIUrl":"10.1016/j.pss.2025.106230","url":null,"abstract":"<div><div>The study of Martian landforms helps to deepen our understanding of the evolutionary history and climate change of Mars, as well as providing key support for Martian landing site selection missions. Most existing Martian landform recognition work has been carried out through geomorphological mapping of optical imagery; however, the recognition of boundaries may be inaccurate due to factors such as brightness and shadows in the images, and there is a lack of direct three-dimensional morphological information. Introducing three-dimensional information by combining high-resolution digital elevation models (DEMs) is expected to effectively improve the accuracy of mapping landform features. However, the dependence of deep learning methods on labeled data makes high-quality annotation a bottleneck. To this end, this study proposes a scribble-to-map framework for geomorphological mapping of multi-category landforms on Mars using high-resolution DEMs with scribble annotations, which effectively reduces the annotation workload. Our proposed framework is based on the mean teacher weak supervision strategy, using reliable and unreliable pseudo-label strategies to make full use of unlabeled data. Our method exceeds current weakly supervised methods and achieves results comparable to those obtained under full supervision. Experimental results on a constructed Martian landform dataset show an overall accuracy (OA) of 92.1% and a mean intersection over union (mIoU) of 77.1% on the test data under 1% annotation, representing improvements of 1.6% and 6%, respectively, when compared to neural networks trained with only sparse annotations. The acquired landform mapping results are applied to subsequent landing site selection analyses. We calculate landform landscape pattern metrics within the study region to characterize the regional spatial distribution of landforms, thereby enhancing the utility of mapping results for follow-up landing site evaluation.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106230"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Science objectives and mission scenarios for a crewed sortie to the Amundsen rim landing region","authors":"Alex Longo,&nbsp;Xiaoming Liu","doi":"10.1016/j.pss.2025.106220","DOIUrl":"10.1016/j.pss.2025.106220","url":null,"abstract":"<div><div>NASA is assessing a set of regions near the lunar south pole as candidate landing sites for crewed Artemis missions to the Moon. We present the first in-depth geomorphologic study of Amundsen Rim, a landing region directly to the west of the 100-km Amundsen Crater. This analysis is facilitated by open-source imagery and laser altimetry data from the Lunar Reconnaissance Orbiter. We identify a level, obstacle-free landing site which meets the performance constraints of the Human Landing System and the mission's science objectives. Within an exploration zone with a radius of 2 km, astronauts can access multiple permanently shadowed regions, the edge of Amundsen's rim, boulders excavated from up to 500 m below the lunar surface, and a crater chain. The landing site is placed in the context of new evidence which supports an igneous origin for the floor of Amundsen Crater. Candidate traverses and field stations for a mission to the site are presented. Multiple high-priority scientific objectives can be addressed on the rim of Amundsen Crater, and it deserves further consideration as a potential destination for crewed lunar landings.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106220"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fractionation of heavier species in the hydrogen atmosphere. Asymptotic approach","authors":"N.V. Erkaev,&nbsp;K.D. Gorbunova","doi":"10.1016/j.pss.2025.106232","DOIUrl":"10.1016/j.pss.2025.106232","url":null,"abstract":"<div><div>Within the hydrodynamic model, an asymptotic analytical method is developed for the fractionation rate of heavier components in the evaporating hydrogen atmosphere that forms a supersonic radial planetary wind due to EUV radiation from the host star. The accuracy of the asymptotic solution is determined by the ratio of the mean free path of particles to the radial scale of the density change. Hydrogen, as the main evaporating component in the planetary atmosphere, entrains heavier components, the loss rate of which is slightly lower than that of hydrogen. The enrichment of the heavier component occurs faster when its atomic mass is larger compared to the mass of the main hydrogen component. In particular, we consider helium and deuterium as additional fractions in the hydrogen planetary atmosphere. The time evolution of each individual helium and deuterium fraction strongly depends on the behavior of the EUV radiation of the host star. However, the relationship between the deuterium and helium fractions is described by the analytical function obtained in this work, which is independent of EUV radiation.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106232"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of technologies for lunar science, exploration, resources, and settlement","authors":"Jared M. Long-Fox,&nbsp;Humberto Campins,&nbsp;Daniel T. Britt","doi":"10.1016/j.pss.2025.106229","DOIUrl":"10.1016/j.pss.2025.106229","url":null,"abstract":"<div><div>The everlasting curiosity that humans have always had about the Moon combined with the innate drive to invent and explore our world and beyond has resulted in the development of technologies to enable investigations the Moon from Earth, from space, and from the lunar surface itself. Lunar <em>in situ</em> and remote sensing research have utilized various sensors and tools to perform scientific inquiries into the geologic history as well as the chemical and physical properties of the Moon to inform on Earth and solar system history. The specific sensors, tools, and modes of study (e.g., remote sensing or direct interaction) depend on the science investigations and technology development/demonstration goals, and recent interests in creating a permanent robotic and human presence on the lunar surface are generating new scientific questions, expanded exploration capabilities, and technology needs. This review of post-Space Race scientific lunar surface exploration and resource utilization technologies includes 1) an overview of lunar materials that will be leveraged to enhance exploration and resource utilization capabilities; 2) past, present, and in-development orbital remote sensing and surface-based mapping, resource prospecting, and surface/regolith characterization technologies; 3) regolith acquisition and transport technologies; 4) regolith processing equipment; 5) oxygen, metal, and volatile (e.g., water) extraction processes; 6) technologies and processes for lunar manufacturing for infrastructure development to enable humanity to become a space-faring civilization. Gaps in regolith-focused exploration and resource utilization technologies are identified and recommendations for future developments are made based on these identified gaps.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"270 ","pages":"Article 106229"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A large Eddy simulation of dust-devil-like vortices on Mars: Characteristics of formation and structure","authors":"Kun Zhang ,&nbsp;Kim-Chiu Chow ,&nbsp;Kwing L. Chan ,&nbsp;Jing Xiao ,&nbsp;Tao Cai","doi":"10.1016/j.pss.2025.106215","DOIUrl":"10.1016/j.pss.2025.106215","url":null,"abstract":"<div><div>Dust devils are small, intense, and short-lived atmospheric vortices which frequently occur on Mars. In this study, a large number of dust-devil-like vortices (referred as dust devils hereafter) have been simulated by using a computational fluid dynamics model with the approach of Large Eddy Simulation (LES). When a uniform and constant heat flux is applied at the surface of the model domain, a number of dust devils appear with cyclonic or anticyclonic rotation, and the total number increases with the magnitude of the heat flux. The simulated dust devils are not randomly distributed, but generally occur at the boundary of the relatively large convection cells. With the high-resolution large eddy simulation, the structure of the dust devils is also revealed, with warm and low-pressure features in the core region.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"269 ","pages":"Article 106215"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145369821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Site selection and thermal model for a Mars habitat built from inflatable components in the Valles Marineris region","authors":"Norbert I. Kömle ,&nbsp;Thomas Herzig ,&nbsp;Wolfgang Macher ,&nbsp;Philipp Gläser ,&nbsp;Gabor Bihari","doi":"10.1016/j.pss.2025.106216","DOIUrl":"10.1016/j.pss.2025.106216","url":null,"abstract":"<div><div>Concepts for habitats suitable for housing humans safely in an extraterrestrial environment have been presented and discussed in the literature since the begin of the space age. Aside of the Moon, human settlements on the surface of Mars move more and more into the focus of interest of space agencies and private companies. These efforts have got a large boost since the recent discoveries by the Mars probes Mars Express and ExoMars–TGO (Trace Gas Orbiter) saying that abundant water resources in the form of ice exist not only at high latitudes, but also in the much warmer equatorial regions. In particular, at the ground of the giant canyon system <em>Valles Marineris</em> they were found even close to the planetary surface and thus would be accessible for use as water supply for a Mars research station inhabited by humans. Therefore, the <em>Valles Marineris</em> region has been suggested as an optimal site for building the first human outpost on Mars, which hopefully will be realized over the coming decades. In view of this expectation, in this paper we describe a new design for a Mars habitat consisting mainly of flexible, inflatable elements including greenhouses for self-sustaining food production, in order to allow for long term residence of humans. We investigate in detail, which sites in the <em>Valles Marineris</em> region would be best suited w.r.t. solar illumination and closeness to water resources and simulate the expected temperature conditions inside the habitat during day and night periods and in different seasons. Additionally, we discuss the influence of dust storms on the living conditions inside the habitat. Note that the main focus of the presented study is on solar irradiation and heat transfer modelling, while for material research, greenhouse gardening and recycling, cosmic radiation hazards and other health and safety aspects associated with the building and maintenance of a human Mars base, we refer to other work published in the literature as well as to our own investigations carried out for a lunar habitat (<span><span>Herzig et al., 2022a</span></span>) and (<span><span>Herzig et al., 2022b</span></span>).</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"269 ","pages":"Article 106216"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145526703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PISCES: Plumes and Ices Simulation chamber for Enceladus and other moonS","authors":"Yaël R.A. Bourgeois,&nbsp;Stéphanie M. Cazaux","doi":"10.1016/j.pss.2025.106206","DOIUrl":"10.1016/j.pss.2025.106206","url":null,"abstract":"<div><div>The discovery of vast subsurface oceans beneath the thick ice crusts of icy moons in our Solar System has ignited global interest in their potential habitability and in the processes shaping these celestial bodies. With upcoming missions set to explore the Galilean and Cronian moons in the coming decades, experimental studies are essential for optimising mission planning, selecting and testing scientific instruments, and maximising the scientific return from future observations. In this paper, we present the Plumes and Ices Simulation Chamber for Enceladus and other moonS (PISCES) — a novel experimental setup designed to replicate the extreme environmental conditions of icy moons, with pressures reaching down to 3 × 10⁻⁵ mbar and temperatures as low as 80 K. PISCES enables controlled laboratory investigations of plume dynamics and surface interactions using a suite of integrated sensors and instruments. We describe the vacuum chamber setup, its capabilities, and its adaptability to various experimental configurations. To demonstrate its potential, we detail experiments simulating Enceladus’ plume activity with the Crevasse Laboratory Analogues for Moons (CLAM), an experimental apparatus employing 3D-printed cylindrical channels positioned above a liquid water reservoir within the vacuum chamber. This approach allows us to examine plume behaviour — including vent velocity, temperature, and particle size — in relation to subsurface conditions such as wall temperature, conduit dimensions, and expansion ratios. Ultimately, PISCES provides a groundbreaking platform for experimentally reproducing icy plumes under conditions analogous to those on Enceladus, advancing our understanding of plume physics and informing future planetary exploration efforts.</div></div>","PeriodicalId":20054,"journal":{"name":"Planetary and Space Science","volume":"269 ","pages":"Article 106206"},"PeriodicalIF":1.7,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145425398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}