Results 51 to 60 of about 3,391 (216)

Phobos is not Hollow

Research 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

Forward and Adjoint Calculations of Gravitational Potential in Heterogeneous, Aspherical Planets

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We have developed a computational package for the calculation of numerically exact internal and external gravitational potential, its functional derivatives and sensitivity kernels, in an aspherical, heterogeneous planet. We detail our implementation, utilizing a transformation of the Poisson equation into a spherical reference domain, as well
Alex D. C. Myhill, Matthew A. Maitra, David Al‐Attar   +2 more
wiley   +1 more source

Forward Modeling of the Phobos Tides and Applications to the First Martian Year of the InSight Mission

Earth and Space Science, 2021
The tidal response of Mars, due to the Sun and the Martian moons, Phobos and Deimos, provides information about the interior structure of Mars. By using the Very Broad Band (VBB) seismometer of Seismic Experiment for Interior Structure (SEIS) as a ...
L. Pou, F. Nimmo, P. Lognonné, D. Mimoun, R. F. Garcia, B. Pinot, A. Rivoldini, D. Banfield, W. B. Banerdt   +8 more
doaj   +1 more source

Saponite Bearing Material Excavated During the Formation of a Recent 25‐m‐Diameter Impact Crater in Southeastern Arabia Terra on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Mars Reconnaissance Orbiter's Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), Context Imager (CTX), and High Resolution Imaging Science Experiment observations were analyzed for a 25‐m‐wide impact crater and associated ejecta deposits located in the dust‐covered Arabia Terra region.
R. E. Arvidson, J. G. Catalano, J. R. Christian, A. A. Fraeman, M. N. Hughes, A. L. Knight, W. B. McKinnon, R. V. Morris, S. L. Murchie, J. A. O’Sullivan, D. V. Politte, F. Seelos, M. J. Wolff, F. Zhou   +13 more
wiley   +1 more source

Phobos: Low Velocity Impacts [PDF]

, 2014
Marss inner moon, Phobos, is located deep in the planets gravity well and orbits far below the planets synchronous orbit. Images of the surface of Phobos, in particular from Viking Orbiter 1, MGS, MRO, and MEX, reveal a rich collisional history ...
Smith, Heather D., Lee, Pascal, Hamilton, Douglas   +2 more
core  

Mass distribution inside Phobos: A key observational constraint for the origin of Phobos.

, 2011
International audienceIn this study, we construct models of the mass distribution inside Phobos. We explore the possible internal mass distributions, considering three kinds of material inside Phobos: rock, porous-rock and water-ice.
Rivoldini, Attilio, Rosenblatt, Pascal, Rambaux, Nicolas, Dehant, Véronique   +3 more
core   +2 more sources

Librational motion of Phobos

, 2011
International audienceMars' satellite Phobos is the target of the Russian space mission Phobos-Grunt. One objective of this mission is to measure the rotational motion of Phobos by using Doppler and Star Tracker measurements. The purpose of this paper is
Castillo-Rogez, Julie C., Le Maistre, Sébastien, Rosenblatt, Pascal, Rambaux, Nicolas   +3 more
core   +1 more source

Were There Tides on Ancient Mars?

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Tides are a key component in the Earth system as they help regulate climate and sustain life. Mars very likely had a surface ocean around 4–3 billion years ago. The NASA Curiosity Rover and the CNSA Zhurong Rover were sent to Gale Crater and the Vastitas Borealis Formation (VBF) on Mars to explore the surface and search for evidence of the ...
M. Jolley, M. Gugliotta, J. A. M. Green
wiley   +1 more source

Tidal disruptions of rubble piles: The case of Phobos

Astronomy & 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 Complete Chloroplast Genome of a Vietnam Endemic Aroid, Homalomena perplexa K.Z.Hein, Vuong, Bao & V.S.Dang, and Updated Comparative Genomics in Araceae

Ecology and Evolution, Volume 16, Issue 3, March 2026.
The complete chloroplast genome of Homalomena perplexa, an endemic aroid to Vietnam, was completely sequenced and characterized. In addition, comparative genomic analysis revealed junction variations and phylogenetic analysis confirmed the infrafamilial relationships of Araceae.
Nhat Nam Nguyen, Ngoc Trai Nguyen, Hoang Dang Khoa Do   +2 more
wiley   +1 more source