Results 81 to 90 of about 14,650 (219)

An Analysis of the Exposure History of Apollo 17 Soils: Exploring Relationships Between Lunar Soil Maturity Indices

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Analysis of space weathering features in lunar regolith using transmission electron microscopy (TEM) allows researchers to characterize the surface exposure timescale of individual grains from the Moon. TEM analysis of regolith grains from Apollo 17 scoop samples, collected from five different locations in the Taurus‐Littrow Valley (TLV), each
J. A. McFadden, M. S. Thompson
wiley   +1 more source

New Horizons Venetia Burney Student Dust Counter Observes Higher than Expected Fluxes Approaching 60 au

open access: yesThe Astrophysical Journal Letters
The NASA New Horizons Venetia Burney Student Dust Counter (SDC) measures dust particle impacts along the spacecraft’s flight path for grains with mass ≥10 ^−12 g, mapping out their spatial density distribution.
Alex Doner   +10 more
doaj   +1 more source

Laboratory studies of interplanetary dust [PDF]

open access: yes
Interplanetary dust particles (IDPs) are a form of primitive extraterrestrial material. In spite of the formidable experimental problems in working with particles that are too small to be seen with the naked eye, it has proven possible to obtain ...
Walker, R. M.
core   +1 more source

Charging of Aggregate Grains in Astrophysical Environments

open access: yes, 2013
The charging of dust grains in astrophysical environments has been investigated with the assumption these grains are homogeneous spheres. However, there is evidence which suggests many grains in astrophysical environments are irregularly-shaped ...
Hyde, Truell   +3 more
core   +1 more source

Formation of Asteroid (16) Psyche by a Giant Impact

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni   +14 more
wiley   +1 more source

Sources of Interplanetary Dust [PDF]

open access: yesSymposium - International Astronomical Union, 1980
It is generally assumed that ejections from active cometary nuclei are the major source of replenishment of the interplanetary dust complex. Conjectures against this concept are usually based on comparison of the quantitative efficiency of the dust production by comets with the efficiency of all the dissipative processes involved.
openaire   +1 more source

The Role of Digital Twin for Space and Remote Terrestrial Construction

open access: yesDigital Twins and Applications, Volume 3, Issue 1, January/December 2026.
This article explores digital twin technology's critical role in construction for extreme environments, including space habitats and remote terrestrial infrastructure. It highlights strategic advantages, discusses essential governance and policy frameworks, and identifies emerging technological trends, emphasising the transformative potential for ...
Ehsan Noroozinejad Farsangi
wiley   +1 more source

Coherent interdecadal cycles in global rainfall, temperature, and cloud cover with alignment to Jovian orbital periods

open access: yesEnvironmental Research Letters
Interdecadal cycles repeatedly appear in global climate variables such as rainfall, temperature, and the climate modes, yet their origin remains unresolved and is most often attributed either to quasi-periodic artefacts of internal climate variability ...
Tobias F Selkirk   +2 more
doaj   +1 more source

Electrostatic Modeling of Dust Impact Signals Based on the Expanding Plasma Cloud

open access: yesThe Astrophysical Journal
Signals generated by dust impacting spacecraft can be detected by electric field instruments. These signals have been simulated by numerous models. However, few models can accurately characterize the expansion of the plasma cloud generated by dust impact.
Han Wu   +4 more
doaj   +1 more source

Occurrence of metal iron inside the planets

open access: yesГеофизический журнал, 2016
Comparison of thermomagnetic and microprobe data on metal iron in terrestrial rocks (xenolithes, Siberian trap and oceanic basalt) has been conducted with the data on extraterrestrial metal iron (in sediments, lunar basalt and meteorites).
D. M. Pecherskyi
doaj   +1 more source

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