Results 61 to 70 of about 2,512 (217)

Tidal disruptions of rubble piles: The case of Phobos

open access: yesAstronomy & Astrophysics
Context. Many small satellites in the Solar System have sub-synchronous orbits, meaning their orbits are decaying due to tidal dissipation. Unless they have substantial material strength, they will eventually tidally disrupt before reaching their planet ...
Agrusa H., Michel P.
doaj   +1 more source

The mass of Phobos

open access: yesGeophysical Research Letters, 1977
Radio tracking data associated with the February 1977 encounters between the Martian satellite Phobos and the Viking Orbiter I spacecraft have been analyzed to determine the gravitational constant (GM) of Phobos. A linear error analysis was conducted to determine the selection of data and the parameter solution set which would yield the best estimate ...
R. H. Tolson   +3 more
openaire   +1 more source

Modeling the Crustal Magnetic Field of Mars With Physics‐Informed Neural Networks

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract Satellites orbiting Mars have measured crustal magnetic fields up to two orders of magnitude stronger than those on Earth. Although Mars currently lacks an active global magnetic field, this magnetization preserves a valuable record of the planet's early dynamo activity and crustal evolution.
T. Delcourt, A. Mittelholz
wiley   +1 more source

Simulation of gravity field estimation of Phobos for Martian Moon eXploration (MMX)

open access: yesEarth, Planets and Space
We study the dynamic orbit about Phobos of the Martian Moon eXploration (MMX) spacecraft and simulate gravity field estimation using Doppler, image landmarks, and LIght Detection And Ranging (LIDAR) data based on a mission plan of MMX and investigate ...
Keiko Yamamoto   +6 more
doaj   +1 more source

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé   +9 more
wiley   +1 more source

Phobos à Sparte

open access: yes, 1993
Phobos at Sparta The significance of the cult of Phobos at Sparta is analysed, based on a passage in Plutarch's "Life of Cleomenes" on the building of a hieron, contemporary with a reform reinforcing the power of the ephors.
Mactoux, Marie-Madeleine
core   +1 more source

Space‐Weathered Anorthosite as Spectral D‐Type Material on the Martian Satellites

open access: yesGeophysical Research Letters, 2018
Spectral D‐type asteroids are characterized by dark, red‐sloped, and featureless spectra at visible and near‐infrared wavelengths and are thought to be composed of rocks rich in organic compounds.
S. Yamamoto, S. Watanabe, T. Matsunaga
doaj   +1 more source

Phobos is not Hollow

open access: yesResearch Notes of the AAS
Abstract In 1966, Iosif Shklovsky and Carl Sagan theorized that exospheric drag could explain Phobos’s rapid inspiral rate towards Mars if Phobos were hollow. Later observations revealed a slower orbital decay rate, and updated models can account for this rate via tidal friction.
Winter Parts, Jason T. Wright
openaire   +1 more source

The Comparative Study on Molecular Phylogenetics and Development of Microsatellite Primers From Durian Chloroplast Genomes

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
Based on the chloroplast genomes, the phylogenetic relationship of durian cultivars was visualized. Furthermore, 13 SSR primer pairs were designed and could be applied for genetic diversity and genotyping studies. ABSTRACT Durian, or Durio zibethinus, is an exotic fruit with high economic value in Southeast Asia.
Tran Gia Huy   +4 more
wiley   +1 more source

Antennas of vehicles landing on a planet surface

open access: yesJournal of Telecommunications and Information Technology, 2001
The antenna systems designed under the international projects ``Mars-96`` and ``Phobos`` are described. The antenna system of Small station landing on Mars, in flight is packed under protective petals of the station and is opened on a surface with the ...
Kira K. Belostotskaya
doaj   +1 more source

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