Results 71 to 80 of about 1,669 (216)

A Photometric Survey of over 200 V-type Asteroids and Their Phase-curve Analysis

The Astrophysical Journal Supplement Series
V-type asteroids are considered to be crustal fragments of asteroid (4) Vesta and possibly of other differentiated parent bodies that once existed in the main asteroid belt.
Adrián Galád, Edyta Podlewska-Gaca, Jozef Világi, Štefan Gajdoš, L‌̌udovít Polčic, Dagmara Oszkiewicz, Agnieszka Kryszczyńska, Dariusz Grzegorzek   +7 more
doaj   +1 more source

Determination of asteroid rotation period

, 2022
Darba mērķis ir izveidot programmu, ar kuras palīdzību var iegūt asteroīda rotācijas periodu no spožuma mērījumiem laikā. Lai to izdarītu, ir jāveic sekojošie uzdevumi: jāizveido programma ar Lomb-Scargle metodi un uz Furjē rindas balstītu metodi, kuras ...
Nagainis, Kristers
core  

Low temperatures and high water/rock ratios in asteroid (101955) Bennu's history based on X‐ray powder diffraction of returned samples

Meteoritics &Planetary Science, Volume 61, Issue 6, Page 1077-1094, June 2026.
Abstract Samples returned by NASA's OSIRIS‐REx mission from the carbonaceous asteroid (101955) Bennu hold clues about conditions in the early solar system and the formation of planetary bodies. Initial investigation of Bennu samples found that they are rich in phyllosilicates and other secondary minerals formed during aqueous alteration of a larger ...
A. J. King, P. F. Schofield, J. Najorka, H. C. Bates, S. S. Russell, T. J. McCoy, T. J. Zega, H. C. Connolly Jr, D. S. Lauretta   +8 more
wiley   +1 more source

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

Advanced Functional Materials, Volume 36, Issue 39, 14 May 2026.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles, Alianna Maguire, Thomas Butruille, Jet Lem, Shuo Yang, Pedro Guerra Demingos, Sahar Choukir, Michel Haché, Boran Kumral, Katherine Jia, Charles Jia, Yu Zou, Chandra Veer Singh, Carlos M. Portela, Jun Lou, Pulickel M. Ajayan, Tobin Filleter   +16 more
wiley   +1 more source

circPDE4B downregulation triggers GEMIN5‑dependent translational stress response and autophagy to reduce MAPT pathology

Alzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Circular RNAs (circRNAs) are emerging as key regulators of gene expression, synaptic plasticity, and neuronal function in Alzheimer's disease (AD). Here, we characterize the biological actions of circPDE4B, a highly expressed circRNA markedly reduced in AD. METHODS circPDE4B knockdown in neuronal progenitor cells was combined with
Sambhavi Puri, Sophie J. F. van der Spek, Mintao Lin, Zihan Wang, Jacob Porter, Junming Hu, Liyuan Hu, Alejandro N. Rondón‐Ortiz, Alexander Knyshov, Jenna L. Libera, Scott E. Counts, Debomoy K. Lahiri, Julia TCW, Andrew Emili, Xiaoling Zhang, Benjamin Wolozin   +15 more
wiley   +1 more source

Modeling the Delivery of Mercury's Polar Ice by a Volatile‐Rich Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Permanently shadowed regions near Mercury's poles are thought to harbor significant deposits of water ice, the origin of which remains to be conclusively determined. One leading hypothesis is that most of the water observed today may have been delivered by a relatively recent, volatile‐rich impact comparable in scale and age to that which ...
Parvathy Prem, Nancy L. Chabot, Carolyn M. Ernst, Dana M. Hurley, David B. Goldstein, Jordan K. Steckloff   +5 more
wiley   +1 more source

Autonomous Restructuring of Asteroids into Rotating Space Stations

CoRR, 2023
65 pages, 53 figures, 25 tables; Version 2 includes editorial changes, improved dumbbell stability details, and reference updates and ...
openaire   +2 more sources

Thermal Segregation and Reddening in Europa's Double Ridges

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Europa's double ridges often display lower albedo and redder color than their surroundings. Their unique topography may cause sublimation‐driven darkening due to illumination and self‐heating—the process of thermal segregation. We apply an advanced 3D thermophysical model, including shadowing and self‐heating through mutual exchange of ...
Kya C. Sorli, Paul O. Hayne, Lucas Lange, Sylvain Piqueux   +3 more
wiley   +1 more source

Itokawa Asteroid

, 2023
International audienceItokawa (25143) is a near-Earth stony (S-type) asteroid. This object has been the first asteroidal target for a sample return mission, the JAXA Hayabusa mission. Itokawa is likely a contact binary. It is small (major axes 530 m, 290
Levasseur-Regourd, Anny Chantal
core   +1 more source

Olivine Microstructure Constraints on Ureilite Parent Body Deformation

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Ureilites are ultramafic achondrites for which the parent body is unknown. Monomict ureilites, consisting primarily of olivine and pyroxene, are thought to represent mantle residues, carrying essential information for their parent body deformation history.
Yaozhu Li, Phil J. A. McCausland, Roberta L. Flemming, Callum J. Hetherington, Bo. Zhao   +4 more
wiley   +1 more source