Results 51 to 60 of about 1,644 (162)

Method Development for the Analysis of Carbonaceous Chondrites by Laser Desorption/Ionization and Secondary Ion Time‐of‐Flight Mass Spectrometry

Journal of Mass Spectrometry, Volume 61, Issue 4, April 2026.
ABSTRACT This study focuses on the development of a laser desorption/ionization mass spectrometric method for analyzing carbonaceous chondrites, meteorites that may hold clues to the origin of life. Since carbonaceous chondrites are only available in small quantities, we initially designed an artificial meteorite material (the mineral forsterite) doped
Edita Rados, Johannes Frank, Ernst Pittenauer   +2 more
wiley   +1 more source

Bio‐Inspired Swarm Robotics Design for Mine Automation

Natural Sciences, Volume 6, Issue 2, April 2026.
Ants demonstrate tandem running for cooperative haulage, and honeybees use memory‐based routes between hive and flowers. These behaviours inspire autonomous haulage robots in open‐pit mines to achieve efficient scan‐plan‐retrieve ore transport, replacing small haulage robots with large mining trucks.
Joven Tan, Noune Melkoumian, David Harvey   +2 more
wiley   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

A Panspermia Origin for Venus Cloud Life

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Decades of study have hinted at the astrobiological potential of Venus's cloud layers. This potential is often cast as stemming from the idea that the Venusian surface was clement in the past. As the climate changed, life then remained in, or perhaps evolved and migrated to, the last habitable niche: the altitudes above ∼50 km with Earth‐like ...
E. Guinan, T. J. Austin, J. G. O’Rourke, N. G. Izenberg, E. A. Silber, E. Trembath‐Reichert   +5 more
wiley   +1 more source

ASTEROID-GENERATED TSUNAMI

Geological Society of America Abstracts with Programs, 2016
Mark B. Boslough, Michael J. Aftosmis, Marsha Berger, Souheil Ezzedine, Galen Gisler, Barbara Jennings, Randall J. LeVeque, Donovan Mathias, Cynthia McCoy, Darrel K. Robertson, Vasily Titov, Lorien Wheeler   +11 more
openaire   +2 more sources

The Efficient Delivery of Highly Siderophile Elements to the Core Creates a Mass Accretion Catastrophe for the Earth

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract The excess abundance of highly siderophile elements (HSEs), as inferred for the terrestrial planets and the Moon, is thought to record a “late veneer” of impacts after the giant impact phase of planet formation. Estimates for total mass accretion during this period typically assume all HSEs delivered remain entrained in the mantle.
Richard J. Anslow, Maylis Landeau, Amy Bonsor, Jonathan Itcovitz, Oliver Shorttle   +4 more
wiley   +1 more source

The Spectroscopic Impact of Sublimation Under Martian Surface Conditions: Implications for Sample Analysis by the Rosalind Franklin Rover and Biosignature Preservation

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract The 2028 ESA/NASA Rosalind Franklin Mission (RFM) will search for signs of past and present life in the shallow subsurface of Mars. It is crucial to understand how minerals and any biosignatures uncovered during these sampling activities might change and be identified under today's Martian conditions.
Louisa J. Preston, Charles H. Minns, Ifigeneia Rousouli, Connor J. Ballard, Sadiazannat Mirdha, Lewis R. Dartnell   +5 more
wiley   +1 more source

Spacecraft and Asteroid Thermal Image Generation for Proximity Navigation and Detection Scenarios

Applied Sciences
On-orbit autonomous relative navigation performance strongly depends on both sensor suite and state reconstruction selection. Whenever that suite relies on image-based sensors working in the visible spectral band, the illumination conditions strongly affect the accuracy and robustness of the state reconstruction outputs.
Matteo Quirino, Michèle Roberta Lavagna
openaire   +2 more sources

Rocket Exhaust Derived Surface Water Migration at Lunar Landing Sites

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Volatiles, especially water, are at the center of modern lunar explorations. They have various sources, including volcanism, asteroid/comet impacts, and Earth/solar wind implantations. However, due to the lack of in situ data, it has not been widely recognized that artificial activities, especially rocket exhaust, could significantly impact ...
Mingyu Tian, Yang Yang, Yuqi Qian, Ke Xu, Meizhu Wang, Lingzhi Sun, James Head, Guochun Zhao   +7 more
wiley   +1 more source

Non‐innocent solvents in meteorite extractions: Evidence for artifact formation

Meteoritics &Planetary Science, Volume 61, Issue 4, Page 706-719, April 2026.
Abstract Solvent extraction is a cornerstone of meteoritic organic and inorganic chemistry, yet the assumption that common solvents act as chemically inert media is becoming increasingly untenable. This study reports that low‐molecular‐weight alcohols, particularly methanol and ethanol, are “non‐innocent” solvents when used to extract soluble sulfur ...
N. Randazzo, R. W. Hilts, R. M. Whittal, B. Reiz, V. Olan‐Rubio, C. D. K. Herd, I. H. Krouse   +6 more
wiley   +1 more source