Results 51 to 60 of about 37,687 (295)

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

SmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen, Yixin Zhu, Mingxia Bao, Ting Zhang, Jun Wu, Jingbin Hao, Dezheng Hua, Xinhua Liu   +7 more
wiley   +1 more source

Radiation-induced alteration of apatite on the surface of Mars: first in situ observations with SuperCam Raman onboard Perseverance

Scientific Reports
Planetary exploration relies considerably on mineral characterization to advance our understanding of the solar system, the planets and their evolution.
E. Clavé, O. Beyssac, S. Bernard, C. Royer, G. Lopez-Reyes, S. Schröder, K. Rammelkamp, O. Forni, A. Fau, A. Cousin, J. A. Manrique, A. Ollila, J. M. Madariaga, J. Aramendia, S. K. Sharma, T. Fornaro, S. Maurice, R. C. Wiens, the SuperCam Science team   +18 more
doaj   +1 more source

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

X-Ray Spectrometry, EarlyView.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Photovoltaics-Driven Power Production Can Support Human Exploration on Mars

Frontiers in Astronomy and Space Sciences, 2022
A central question surrounding possible human exploration of Mars is whether crewed missions can be supported by available technologies using in situ resources.
Anthony J. Abel, Anthony J. Abel, Aaron J. Berliner, Aaron J. Berliner, Mia Mirkovic, Mia Mirkovic, William D. Collins, William D. Collins, Adam P. Arkin, Adam P. Arkin, Adam P. Arkin, Douglas S. Clark, Douglas S. Clark, Douglas S. Clark   +13 more
doaj   +1 more source

The depth of the convective boundary layer and implications for a Walker-like circulation on Mars [PDF]

, 2011
Radio science observations indicate that the depth of the martian convective boundary layer varies strongly with surface height, although the surface temperature does not.
Hinson, D. P., Lewis, S. R., Spiga, A.
core  

Development of CCMb: A Low‐Mg Calcite Reference Material for In Situ Measurement of δ18O, δ13C and Selected Trace Elements

Geostandards and Geoanalytical Research, EarlyView.
Key Points Low‐Mg calcite RM developed for in situ microanalysis applications in palaeoclimatology (δ18O, δ13C; Mg, Sr m/m). New data for calcite CRM IAEA‐603 (δ18O, δ13C by SIMS and GS‐IRMS; Mg m/m). No detectable IMF effect of Mg on SIMS δ18O determinations for mass fractions < 3650 μg g‐1.
Andreas T. Hertwig, Maciej G. Śliwiński, Irene Cantarero, Richard A. Stern, Carles Fàbrega, Jakub T. Śliwiński, Thomas Ludwig, František Majs, William Nachlas, John H. Fournelle, Xavier Llovet, Rachelle B. Turnier, David Parcerisa, Anna Travé   +13 more
wiley   +1 more source

The ISSI international study team on the martian PBL – status report and plan [PDF]

, 2008
Dynamical processes in the Martian boundary layer provide the means of communication between surface ice deposits and the free atmosphere, and the means of lifting dust from the surface.
Galperin, B., Gundersson, K., Larsen, S., Lewis, S., Petrosyan, A., Read, P., Renno, N., Richardson, M., Rogberg, P., Savijärvi, H., Seiferlin, K., Siili, T., Thomas, N., Toigo, A.   +13 more
core  

Water induced sediment levitation enhances downslope transport on Mars [PDF]

, 2017
On Mars, locally warm surface temperatures (~293 K) occur, leading to the possibility of (transient) liquid water on the surface. However, water exposed to the martian atmosphere will boil, and the sediment transport capacity of such unstable water is ...
A Cousin, A Kereszturi, AH Treiman, AS McEwen, C Atwood-Stone, C Elachi, CJ Hansen, CM Dundas, CM Dundas, CM Dundas, CP McKay, D Reiss, D Reiss, D Reiss, DE Stillman, DE Stillman, DL Turcotte, DWG Sears, EJ Gaidos, F Costard, F Schmidt, G Jouannic, G Jouannic, HH Kieffer, J Arfstrom, J Laskar, J Raack, J Raack, J-P Bibring, JEC Scully, JF Mustard, JL Dickson, JL Heldmann, JL Heldmann, JL Heldmann, JM Goldspiel, JW Head, K Pasquon, KA Coleman, L Ojha, L Ojha, LK Fenton, M Balme, M Chojnacki, M Massé, M Vincendon, MA Kreslavsky, MC Malin, MC Malin, MG Kleinhans, MH Hecht, MI Richardson, MJ Westoby, MT Mellon, N Hoffman, N Mangold, PR Christensen, R Sullivan, RE Grimm, RM Haberle, S Diniega, S Diniega, SC Schon, SJ Conway, SJ Conway, SW Squyres, T Appéré, WV Boynton, YA Cengel   +68 more
core   +5 more sources

Potential of VIS‐IR imaging spectroscopy and SEM‐EDS and EMPA to map the mineralogical composition of NWA 7317 (CR6)

Meteoritics &Planetary Science, EarlyView.
Abstract Asteroid compositional analysis relies on comparing reflectance spectra with laboratory data from well‐characterized meteorites. To advance this comparison, we performed a comprehensive laboratory analysis on a slab of the Northwest Africa (NWA) 7317—CR6 carbonaceous chondrite.
Simone Pascucci, Tiberio Cuppone, Martina Casalini, Simone De Angelis, Antonio Lettino, Angelo Palombo, Eliana La Francesca, Gianrico Filacchione, Maria Cristina De Sanctis, Anna Galiano, Giovanni Pratesi   +10 more
wiley   +1 more source