Results 51 to 60 of about 123,895 (209)

Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry

, 2016
The nature and origin of the asteroids orbiting in near-Earth space, including those on a potentially hazardous trajectory, is of both scientific interest and practical importance.
Carry, Benoit, DeMeo, Francesca E., Eggl, Siegfried, Solano, Enrique   +3 more
core   +3 more sources

Equipotential Surfaces and Lagrangian points in Non-synchronous, Eccentric Binary and Planetary Systems [PDF]

, 2006
We investigate the existence and properties of equipotential surfaces and Lagrangian points in non-synchronous, eccentric binary star and planetary systems under the assumption of quasi-static equilibrium.
B. Willems, Habets G. M. H. J., Hilditch R. W., J. F. Sepinsky, Kruszewski A., Levato H., Marcy G. W., Plavec M., Polfliet R., Savonije G. J., Spruit H. C., Tout C. A., V. Kalogera, Vanbeveren D., Zahn J.-P., Zahn J.-P.   +15 more
core   +3 more sources

Mapping “Brain Terrain” Regions on Mars Using Deep Learning

The Planetary Science Journal
One of the main objectives of the Mars Exploration Program is to search for evidence of past or current life on the planet. To achieve this, Mars exploration has been focusing on regions that may have liquid or frozen water.
Kyle A. Pearson, Eldar Noe, Daniel Zhao, Alphan Altinok, Alexander M. Morgan   +4 more
doaj   +1 more source

A Methodology of Designing the Teeth Conjugation in a Planetary Roller Screw

Archive of Mechanical Engineering, 2016
The paper presents the methodology for designing the teeth conjunction of planetary gears in the planetary roller screw mechanism. A function of the planetary gears is to synchronize an operation of rollers in order to avoid axial displacements.
Lisowski Filip, Ryś Jan
doaj   +1 more source

Twenty-Second Lunar and Planetary Science Conference [PDF]

The papers in this collection were written for general presentation, avoiding jargon and unnecessarily complex terms. Some of the topics covered include: planetary evolution, planetary satellites, planetary composition, planetary surfaces, planetary ...

core   +1 more source

Emplacement of penetrators into planetary surfaces [PDF]

, 1996
We present experimental data and a model for the low-velocity (subsonic, 0–1000 m/s) penetration of brittle materials by both solid and hollow (i.e., coring) penetrators.
Ahrens, Thomas J., Anderson, William W., Gibson, Andrew, Scott, Ronald, Suzuki, Kojiro   +4 more
core   +1 more source

MultIHeaTS: A Fast and Stable Thermal Solver for Multilayered Planetary Surfaces

The Planetary Science Journal
A fully implicit scheme is proposed for solving the heat equation in 1D heterogeneous media, available as a computationally efficient open-source Python code. The algorithm uses finite differences on an irregular grid and is unconditionally stable due to
Cyril Mergny, Frédéric Schmidt
doaj   +1 more source

Probing Planetary Surfaces and Deep Interiors [PDF]

No abstract ...
Haviland, Heidi
core   +1 more source

Volatile Elements Characterized by MarSCoDe in Materials at Zhurong Landing Site

The Astronomical Journal
The study of volatile elements on the Martian surface is a critical way to explore the geological evolution history of Mars. Volatile elements such as hydrogen (H), sulfur (S), and chlorine (Cl) on the Martian surface act as proxies for the potential ...
Yizhong Zhang, Xin Ren, Zhaopeng Chen, Yuxuan Luo, Wangli Chen, Jianjun Liu, Xiangfeng Liu, Zhenqiang Zhang, Weiming Xu, Rong Shu, Chunlai Li   +10 more
doaj   +1 more source

Impact Dynamics of Moons Within a Planetary Potential

, 2019
Current lunar origin scenarios suggest that Earth's Moon may have resulted from the merger of two (or more) smaller moonlets. Dynamical studies of multiple moons find that these satellite systems are not stable, resulting in moonlet collision or loss of ...
Aharonson, Oded, Rufu, Raluca
core   +1 more source