Results 71 to 80 of about 24,389,785 (159)

Elastic Properties of Titan Tholins Revealed by Brillouin Spectroscopy

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Titan tholins, complex organic solids synthesized by simulating photochemical processes in Titan's atmosphere, are widely regarded as analogs to organic surface materials on the Saturnian moon. Their mechanical properties are critical for understanding the evolution of Titan's geomorphology and crustal layering.
Mark A. Johnson   +9 more
wiley   +1 more source

Passive sorting of asteroid material using solar radiation pressure [PDF]

open access: yes, 2014
Understanding dust dynamics in the vicinity of asteroids is key for future science missions and, in the long-term, for asteroid exploitation. This paper analyses the feasibility of manipulating asteroid material by means of solar radiation pressure.
Sanchez Cuartielles, Joan-Pau   +2 more
core   +1 more source

Probing Subsurface Properties With Mission Hardware: Lessons Learned From Artificial Impacts of Mars 2020

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Hardware released during spacecraft entry can generate hypervelocity impacts that provide unique constraints on planetary subsurface properties. During NASA's Perseverance descent, two tungsten cruise ballast mass devices (CBMD) and fragments of the cruise stage formed meter‐scale craters north‐west of Jezero crater, in one of the sinuous ...
A. J. Sokołowska   +4 more
wiley   +1 more source

Experimental characterization of the thrust induced by laser ablation on an asteroid [PDF]

open access: yes, 2013
This paper presents an improved laser ablation model and compares the performance – Δv and mass efficiency - of laser ablation against contactless deflection methods based on ion-propulsion.
Vasile, Massimiliano   +4 more
core   +2 more sources

Carbonaceous Chondrite-like Compositions for Proposed Captured Trans-Neptunian Objects Justitia and Pompeja

open access: yesThe Astrophysical Journal Letters
Red spectral slopes (i.e. increasing reflectance with increasing wavelength) and featureless 0.5–2.5 μ m spectra are often associated with the presence of organic material, and there is a sense that the redder the slope, the more organic material is ...
Andrew S. Rivkin   +3 more
doaj   +1 more source

Stratified Evolution of Ryugu’s Regolith Revealed by Spectroscopic Analyses of Two Hayabusa2 Collected Particles

open access: yesThe Astrophysical Journal
We present Fourier transform infrared (FTIR) and Raman spectroscopic analyses of two particles (A0226 and C0242) returned from the C-type asteroid Ryugu by the Hayabusa2 mission.
M. Angrisani   +9 more
doaj   +1 more source

Life on Mars? The physiological perspective

open access: yes
Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley   +1 more source

Photometric Observations and Analysis of Active Asteroid (62412) 2000 SY178

open access: yesThe Astronomical Journal
The active asteroid (62412) 2000 SY178 is a C-type object located in the outer main belt and was first reported to exhibit a dust tail in 2014 May. Before and after its recent perihelion, we carried out long-term observations of 2000 SY178 with the ...
Xiangyu Fan   +3 more
doaj   +1 more source

Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material

open access: yesThe Astrophysical Journal
The analysis of samples returned from the C-type asteroid Ryugu has drastically advanced our knowledge of the evolution of early solar system materials.
Ryoji Tanaka   +25 more
doaj   +1 more source

Spitzer Observations of the Koronis Asteroid Family: Probing Size-dependent Surface Evolution

open access: yesThe Planetary Science Journal
The Koronis family is an ideal case study, as its members share a common formation age and composition. This enables investigation of how surface properties vary with asteroid size, independent of shared family age.
Annika Gustafsson   +6 more
doaj   +1 more source

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