Results 21 to 30 of about 6,852,218 (267)

Space weathering of asteroidal surfaces [PDF]

open access: yesAstronomy and Astrophysics, 2010
Context. The surfaces of airless bodies in the Solar System are continuously altered by the bombardment of micrometeoroids and irradiation by solar wind, flares, and cosmic particles. Major effects of this process – space weathering – are darkening and “reddening” of the spectra of surface materials, as well as a “degrading” of absorption features ...
Z. Kaňuchová   +3 more
openaire   +1 more source

Collisional evolution and reddening of asteroid surfaces – I. The problem of conflicting time-scales and the role of size-dependent effects [PDF]

open access: yes, 2011
Space weathering is the generic term used for processes that modify the optical properties of surfaces of atmosphereless rocky bodies under exposure to the space environment. The general agreement about the relevance of the effects of space weathering on
S. Marchi   +4 more
semanticscholar   +1 more source

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

open access: yesScience, 2023
The Hayabusa2 spacecraft collected samples from the surface of the carbonaceous near-Earth asteroid (162173) Ryugu and brought them to Earth. The samples were expected to contain organic molecules, which record processes that occurred in the early Solar ...
H. Naraoka   +114 more
semanticscholar   +1 more source

Carbon Speciation and Solubility in Silicate Melts

open access: yesGeophysical Monograph Series, Page 179-194., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova   +2 more
wiley  

+2 more sources

Stereophotoclinometry for OSIRIS-REx Spacecraft Navigation

open access: yesThe Planetary Science Journal, 2023
We summarize a decade of effort by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission team to build up the unique capabilities, processes, and procedures required to accomplish the ...
Coralie D. Adam   +20 more
doaj   +1 more source

An Efficient Numerical Approach to Modeling the Effects of Particle Shape on Rubble-pile Dynamics

open access: yesThe Planetary Science Journal, 2023
We present an approach for the inclusion of nonspherical constituents in high-resolution N -body discrete element method (DEM) simulations. We use aggregates composed of bonded spheres to model nonspherical components.
Julian C. Marohnic   +4 more
doaj   +1 more source

Optimization of Future Multifilter Surveys Toward Asteroid Characterization

open access: yesThe Astronomical Journal, 2023
The aim of this paper is to find a set of photometric passbands that will give optimal results for spectrophotometric classification of asteroids into taxonomic types and classes.
Hanna Klimczak   +6 more
doaj   +1 more source

INVESTIGATIONS OF SURFACES OF ATMOSPHERE LESS BODIES USING SCATTERED SOLAR LIGHT

open access: yesOdessa Astronomical Publications, 2017
Sunlight scattered by surfaces of atmosphere less bodies carry information about details of these surfaces. Burns and Tedesco in 1979 published formula for estimations of dimensions of details located on surfaces of asteroids.
V. V. Prokofjeva-Mikhailovskaja   +1 more
doaj   +1 more source

Surface Geology of Jupiter’s Trojan Asteroids

open access: yesSpace Science Reviews, 2023
AbstractThe surface geology of Jupiter’s Trojan asteroids is one of the scientific investigations of the NASALucymission. A dedicated Geology Working Group will implement these studies using primarily panchromatic and color imaging data and complement the interpretation of these data with theoretical models, such as collisional evolution models ...
S. Marchi   +3 more
openaire   +1 more source

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