Results 51 to 60 of about 6,184,520 (197)
From Bednets to Rocket Ships: Efficiency in the Long‐Term and Neglect for the Present
Journal of Applied Philosophy, EarlyView.ABSTRACT In this article I develop an objection to Longtermism – the view that concern for the long‐term future is a moral imperative – that is often gestured at, but not fleshed out. I call this the Far‐Future Priority Objection: Longtermism may entail significant resource reallocation and systemic neglect of the worst off today.
Elizabeth C. Hupfer
wiley +1 more source
Asteroid-Generated Tsunamis: A Review
, 2022 AbstractWe study ocean waves caused by an asteroid airburst located over the ocean. The concern is that the waves would damage distant coastal cities. Simple qualitative analysis suggests that the wave energy is proportional to the ocean depth and the strength and speed of the blast.
openaire +1 more source
Meteoritics &Planetary Science, Volume 60, Issue 3, Page 529-543, March 2025.Abstract Solar wind Fe and Mg fluences (atoms/cm2) were measured from Genesis collectors. Fe and Mg have similar first ionization potentials and solar wind Fe/Mg should equal the solar ratio. Solar wind Fe/Mg is a more valid measure of solar composition than CI chondrites and can be measured more accurately than spectroscopic photospheric abundances ...
D. S. Burnett +11 more
wiley +1 more source
Generalization of the Hill problem as an application for the Trojan asteroids of the solar system
, 2014 The restricted four body problem studies the dynamics of a massless particle under the gravitational force produced by three masses (primaries) in an equilateral configuration. One primary, say m3, is considered too small compared with the other ones.
Burgos-Garcia, Jaime, Gidea, Marian
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Meteoritics &Planetary Science, Volume 60, Issue 3, Page 544-569, March 2025.Abstract Refractory inclusions (RIs) in chondrites are widely used as tracers of early solar system formation conditions. In the context of sample‐return missions, a non‐destructive and non‐invasive analytical tool that can rapidly detect and characterize RIs in space samples during their early phase of study is highly needed.
Jean Charlier +4 more
wiley +1 more source
Shock‐heated graphite in three IAB iron meteorites—Implications on the formation of diamond
Meteoritics &Planetary Science, Volume 60, Issue 4, Page 744-756, April 2025.Abstract Iron meteorites, originating from the deepest parts of their parent bodies and separated during major break‐up events, surprisingly rarely contain diamonds despite experiencing similar pressure–temperature conditions as diamond‐bearing ureilites. In this study, graphite from three non‐magmatic IAB iron meteorites Canyon Diablo, Campo del Cielo,
Oliver Christ +7 more
wiley +1 more source
Exploring the origins of magnetization within the Chicxulub crater upper peak ring
Meteoritics &Planetary Science, Volume 60, Issue 4, Page 823-848, April 2025.Abstract Large terrestrial impacts may produce vast subsurface hydrothermal systems, capable of generating conditions favorable to the origin of life. Modeling suggests that these systems may persist for >1 million years for basin‐sized craters; however, direct experimental constraints on hydrothermal system duration are needed.
Christina M. Verhagen +13 more
wiley +1 more source
Microfaults: Abundant shear deformation and frictional melting in chondrites
Meteoritics &Planetary Science, Volume 60, Issue 4, Page 858-868, April 2025.Abstract The majority of ordinary chondrite (OC) meteorites record some amount of textural evidence for impact‐induced deformation. Melt veins in some shocked samples have been compared to terrestrial impact‐related pseudotachylites, which form by frictional melting of host rock.
Craig R. Walton +2 more
wiley +1 more source
A complete inventory of institutional and public meteorite collections in Switzerland
Meteoritics &Planetary Science, EarlyView.Abstract Museums and universities are important for collecting, maintaining, and curating meteorites. To make specimens known and available for research, inventorying and optimal curation are important. However, not all meteorite collections are well curated, especially in smaller institutions.
J. Eschrig +2 more
wiley +1 more source
Procedia Engineering, 2015 AbstractAs part of a larger effort involving members of several other organizations, we have conducted numerical simulations in support of emergency-response exercises of postulated asteroid ocean impacts. We have addressed the problem from source (asteroid entry) to ocean impact (splash) to wave generation, propagation and interaction with the U.S ...
Tarabay Antoun +5 more
openaire +2 more sources