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Relation between magnetopause position and reconnection rate under quasi-steady solar wind dynamic pressure.
Earth Planets Space
December 2024
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK Canada.
Unlabelled: The lunar environment heliospheric X-ray imager (LEXI) and solar wind-magnetosphere-ionosphere link explorer (SMILE) will observe the magnetopause motion in soft X-rays to understand dayside reconnection modes as a function of solar wind conditions after their respective launches in the near future. To support their successful science mission, we investigate the relationship between the magnetopause position and the dayside reconnection rate by utilizing super dual auroral radar network (SuperDARN) observations and widely used empirical models of magnetopause position (Shue et al. in J Geophys Res 103:17691-17700.
View Article and Find Full Text PDFBioinspired Active Dynamic Dust Remover for Multiscale Stardust Repelling of Unmanned Probe Surface.
Nano Lett
December 2024
Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun, Jilin 130022, China.
Unmanned probes, mainly powered by solar panels, are effective tools for exploiting space resources to expand the human habitat. However, it remains a great challenge for the unmanned probes to actively repel multiscale dust particles in space. Inspired by the synergistic antifouling mechanism of fly wings and legs, a biomimetic dynamic antifouling surface (BDAS) was prepared based on a combination of self-assembly and template inversion.
View Article and Find Full Text PDFTidally driven remelting around 4.35 billion years ago indicates the Moon is old.
Nature
December 2024
Collège de France, CNRS, PSL University, Sorbonne University, Paris, France.
The last giant impact on Earth is thought to have formed the Moon. The timing of this event can be determined by dating the different rocks assumed to have crystallized from the lunar magma ocean (LMO). This has led to a wide range of estimates for the age of the Moon between 4.
View Article and Find Full Text PDFThe Formation Mechanisms of np-Fe in Lunar Regolith: A Review.
Materials (Basel)
November 2024
Center for Lunar and Planetary Sciences, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China.
Nanophase iron (np-Fe) is widely distributed on the surface of lunar soil particles, forming as a result of space weathering. These np-Fe particles contribute to the reddening and darkening of the visible to near-infrared spectra of weathered lunar material and serve as critical indicators for assessing the maturity of lunar soil. (1) This article reviews the proposed formation mechanisms of np-Fe particles from studies of Apollo and Luna soils, including the thermal reduction of iron melts, vapor deposition caused by micrometeorite impacts, and hydrogen reduction due to solar wind exposure.
View Article and Find Full Text PDFTriple oxygen isotopes of lunar water unveil indigenous and cometary heritage.
Proc Natl Acad Sci U S A
December 2024
Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093.
The origin of water in the Earth-Moon system is a pivotal question in planetary science, particularly with the need for water resources in the race to establish lunar bases. The candidate origins of lunar water are an indigenous lunar component, solar wind water production, and the delivery of meteoritic and cometary material. Characterizing the oxygen isotopic composition of water provides information on lunar oxygen sources.
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