Results 11 to 20 of about 115 (100)

UV-Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H₂CO₃)_n Calculations. [PDF]

Chemphyschem
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dinu DF, Klein B, Zhang C, Talmazan RA, Loerting T, Grothe H, Kaiser RI, Podewitz M.   +7 more
europepmc   +2 more sources

Second‐Scale Formation of Non‐Field‐Aligned Plasma Irregularities Observed From a High‐Altitude 43‐Cassiopeiids Fireball

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract High‐altitude optical meteors initiating above 150 km are exceedingly rare, with confirmed observations largely confined to the Leonids. Using the Meteor and ionospheric Irregularity Observation System, we recorded a bright 43‐Cassiopeiids fireball with heterogeneous material. It initiated luminously at an exceptional altitude of 157.8 ± $\pm $
Yi Li, Guozhu Li, Zhi Wu, Wenzhi Chen, Zhaoguo Huang, Lianhuan Hu, Xiukuan Zhao, Wenjie Sun, Haiyong Xie, Guofeng Dai, Jianfei Liu, Baiqi Ning, Shoumin Chang   +12 more
wiley   +1 more source

Transport of Water in a Transient, Impact‐Generated Atmosphere on Mercury

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Mercury's polar cold traps host water ice deposits that are likely populated with impact‐delivered water via Mercury's exosphere. However, Mercury's near‐sun location experiences an extremely high photodestruction rate that rapidly destroys water with a timescale of only ∼3.5 hr.
J. K. Steckloff, D. B. Goldstein, P. L. Varghese, L. M. Trafton, P. Prem   +4 more
wiley   +1 more source

Archives of impact: The politics of craters on Earth

Geographical Research, Volume 64, Issue 2, May 2026.
This paper examines Earth’s 195 confirmed impact craters as archives, exploring their cataloguing and presentation as heritage sites. It argues Western scientific framings using military language and emphasising catastrophe overlook settler colonialism’s violent histories and marginalise indigenous earth‐sky cosmologies.
Gareth Hoskins
wiley   +1 more source

Characterization of Mercury's Atomic and Molecular Hydrogen Exosphere and the First Detection of H2 Ions

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract From 1974 to 1975, the Mariner 10 spacecraft studied Mercury's environment during three flybys and detected hydrogen, helium, and possibly atomic oxygen in the exosphere using its ultraviolet spectrometer, but no molecular hydrogen. Based on the sensitivity of the occultation instrument, an upper limit for the H2 ${\mathrm{H}}_{2}$ surface ...
F. Weichbold, D. Schmid, H. Lammer, M. Volwerk, M. Scherf, N. V. Erkaev, A. Varsani, C. Simon Wedlund, C. Mazelle   +8 more
wiley   +1 more source

Evidence of an Extended Alfvén Wing System at Enceladus: Cassini's Multi‐Instrument Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract We report in situ evidence for Enceladus' Alfvén wing system and its coupling with Saturn's ionosphere, based on multi‐instrument observations from the Cassini spacecraft. Analysis of 36 events, including 13 from non‐flyby paths, confirms the existence of a Main Alfvén Wing (MAW) current system generated at Enceladus, and associated Reflected ...
L. Z. Hadid, T. Chust, J.‐E. Wahlund, M. W. Morooka, E. Roussos, O. Witasse, J. Rabia, D. Pisa, K. Kim, N. J. T. Edberg, A. M. Rymer, L. Lamy, S. Kotsiaros, S. Aizawa, A. Jeandet, R. Modolo, N. André, P. Canu, C. F. Bowers, X. Jia, A. J. Coates, G. H. Jones, A. Parsec‐Wallis, O. Agiwal, M. K. G. Holmberg, Q. Nénon, H. Cao, W. S. Kurth, M. K. Dougherty   +28 more
wiley   +1 more source

Constructed Response Paragraph Jigsaw Puzzle Test for Measuring Structure Building Ability

Applied Cognitive Psychology, Volume 40, Issue 1, January/February 2026.
ABSTRACT This study examined whether paragraph jigsaw puzzle (PJP) test can be used to measure structure building ability, the ability to construct cohesive mental representations. We developed a constructed‐response version of the PJP test and scored it with a string‐similarity algorithm that allows for partial credit.
Hwimin Kim, JungYeon Park, Min Hae Song, Jooyong Park   +3 more
wiley   +1 more source

A Thermal Origin to the Asymmetry of the Permanent Dust Cloud at the Moon

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract The Moon's surface, lacking an atmosphere, is continually bombarded by high‐speed micro‐meteoroids, creating a highly porous regolith composed of very fine grains. This regolith's porosity decreases with depth due to compression. Besides creating vapor and melt, micro‐meteoroid impacts eject lunar dust, redistributing regolith grains, which ...
Sébastien Verkercke, Cem Berk Senel, Robert Luther, Menelaos Sarantos, Elena Martellato, Gareth S. Collins, Lisa Krämer Ruggiu, Steven Goderis, Özgür Karatekin, Philippe Claeys   +9 more
wiley   +1 more source

The Gold‐Maker of Animal Oil and Prussian Blue Fame — The Chemical and Medicinal Science Philosophy of Johann Conrad Dippel

The Chemical Record, Volume 25, Issue 7, July 2025.
The radical Pietist Johann Conrad Dippel was a self‐proclaimed adept – a maker of gold and the philosophers’ stone. He was also a magister of theology, a doctor of medicine, and a self‐taught chemist, who coinvented the pigment Prussian Blue together with Johann von Diesbach, became known for his animal pyrolysis oil, his wonder‐wound balm, his ...
Curt Wentrup
wiley   +1 more source

Observations of a Disconnection Event and Other Large‐Scale Disturbances in the Ion Tail of Comet C/2022 E3 (ZTF)

Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.
Abstract We analyze five large‐scale tail disturbances in comet C/2022 E3 (ZTF)'s ion tail using images from astrophotographers, tracking specific features within the tail to determine their speeds. We employ a heliosphere model to estimate when the comet crossed the heliospheric current sheet (HCS).
A. Wellbrock, G. H. Jones
wiley   +1 more source