Results 81 to 90 of about 85,468 (250)

Dynamic 3D Simulation of Surface Charging on Rotating Asteroids

The Astrophysical Journal
The surface-charging phenomenon of asteroids, mainly resulting from solar wind plasma and solar radiation, has been extensively studied. However, the influence of the asteroid’s rotation on surface charging is not yet fully understood.
Ronghui Quan, Zhiying Song, Zhigui Liu
doaj   +1 more source

Bi‐Directional Spectro‐Polarimetry of Olivine Sand

Earth and Space Science, Volume 12, Issue 1, January 2025.
Abstract We characterized the bi‐directional spectro‐polarimetry of olivine sands of varying grain size distributions for a comprehensive set of measurement and illumination angles over a wavelength range of 350–2,500 nm. Our laboratory instrumentation included a hyperspectral goniometer, a broadband linear polarizer, and a tungsten‐halogen ...
Chris H. Lee, Charles M. Bachmann, Nayma Binte Nur, Rachel M. Golding   +3 more
wiley   +1 more source

An Earth Encounter as the Cause of Chaotic Dynamics in Binary Asteroid (35107) 1991VH

The Planetary Science Journal
Among binary asteroids, (35107) 1991VH stands out as unique given the likely chaotic rotation within its secondary component. The source of this excited dynamical state is unknown. In this work, we demonstrate that a past close encounter with Earth could
Alex J. Meyer, Oscar Fuentes-Muñoz, Ioannis Gkolias, Kleomenis Tsiganis, Petr Pravec, Shantanu Naidu, Daniel J. Scheeres   +6 more
doaj   +1 more source

Stability of a rotating asteroid housing a space station [PDF]

arXiv, 2018
Today there are numerous studies on asteroid mining. They elaborate on selecting the right objects, prospecting missions, potential asteroid redirection, and the mining process itself. For economic reasons, most studies focus on mining candidates in the 100-500m size-range.
arxiv  

Rotation periods of asteroids from light curves of TESS data [PDF]

Astronomy & Astrophysics, 2025, Volume 693, id.A66,
Understanding the dynamical evolution of asteroids through the secular Yarkovsky effect requires the determination of many physical properties, including the rotation period. We propose a method aimed at obtaining a robust determination of the rotation period of asteroids, while avoiding the pitfalls of aliases. We applied this approach to thousands of
arxiv   +1 more source

Positive correlation between shock stage and petrologic type in ordinary chondrites: Implications for the internal structures and thermal histories of ordinary‐chondrite parent asteroids

Meteoritics &Planetary Science, Volume 60, Issue 1, Page 17-31, January 2025.
Abstract H, L, and LL chondrites all exhibit positive correlations between mean shock stage and petrologic type. At a given shock energy, hot samples exhibit more intense shock features than cold samples. After the ordinary‐chondrite (OC) parent asteroids were collisionally disrupted, jumbled, and gravitationally reassembled, the correlations between ...
Alan E. Rubin
wiley   +1 more source

Observational data and orbits of the asteroids discovered at the Baldone Observatory in 2015–2018

Open Astronomy, 2020
This paper is devoted to the discovery of 37 asteroids at the Baldone Astrophysical Observatory (MPC 069) from 2015 to 2018, and one of dynamically interesting Mars-crosser (MC) observed at the Baldone Astrophysical Observatory, namely 2008 LX16.
Wlodarczyk Ireneusz, Černis Kazimieras, Eglitis Ilgmars   +2 more
doaj   +1 more source

Rotational Mass Shedding from Asteroid (6478) Gault [PDF]

, 2021
Jane Luu, David Jewitt, Max Mutchler, Jessica Agarwal, Yoonyoung Kim, Jing Li, H. A. Weaver   +6 more
openalex   +1 more source

Rapid colonization of a space‐returned Ryugu sample by terrestrial microorganisms

Meteoritics &Planetary Science, Volume 60, Issue 1, Page 64-73, January 2025.
Abstract The presence of microorganisms within meteorites has been used as evidence for extraterrestrial life, however, the potential for terrestrial contamination makes their interpretation highly controversial. Here, we report the discovery of rods and filaments of organic matter, which are interpreted as filamentous microorganisms, on a space ...
Matthew J. Genge, Natasha Almeida, Matthias Van Ginneken, Lewis Pinault, Louisa J. Preston, Penelope J. Wozniakiewicz, Hajime Yano   +6 more
wiley   +1 more source

Active Asteroids: Main-Belt Comets and Disrupted Asteroids [PDF]

arXiv, 2015
The study of active asteroids has attracted a great deal of interest in recent years since the recognition of main-belt comets (which orbit in the main asteroid belt, but exhibit comet-like activity due to the sublimation of volatile ices) as a new class of comets in 2006, and the discovery of the first disrupted asteroids (which, unlike MBCs, exhibit ...
arxiv