Results 61 to 70 of about 9,418 (215)

Formation of Asteroid (16) Psyche by a Giant Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Asteroid (16) Psyche is the largest likely metal‐rich asteroid in the Solar System and the target of the NASA Psyche mission. The mission aims to determine whether the asteroid is the core of a differentiated planetesimal that lost its mantle via a giant impact.
Saverio Cambioni, Benjamin P. Weiss, Namya Baijal, Robert Melikyan, Erik Asphaug, John B. Biersteker, Richard P. Binzel, William F. Bottke, Samuel W. Courville, Linda T. Elkins‐Tanton, David J. Lawrence, José M. G. Merayo, Carol A. Raymond, Mark A. Wieczorek, Maria T. Zuber   +14 more
wiley   +1 more source

Astronomical Constraints on Some Long‐Range Models of Modified Gravity

Advances in High Energy Physics, Volume 2007, Issue 1, 2007., 2007
We use the corrections to the Newton‐Einstein secular precessions of the longitudes of the perihelia of the inner planets, phenomenologically estimated E.V. Pitjeva by fitting almost one century of data with the EPM2004 ephemerides, to constrain some long‐range models of modified gravity recently put forth to address the dark energy and dark matter ...
Lorenzo Iorio, Sandip Pakvasa
wiley   +1 more source

Prominent Mid-infrared Excess of the Dwarf Planet (136472) Makemake Discovered by JWST/MIRI Indicates Ongoing Activity

The Astrophysical Journal Letters
We report on the discovery of a very prominent mid-infrared (18–25 μ m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the Mid-Infrared Instrument of the James Webb Space Telescope, along with previous ...
Csaba Kiss, Thomas G. Müller, Anikó Farkas-Takács, Attila Moór, Silvia Protopapa, Alex H. Parker, Pablo Santos-Sanz, Jose Luis Ortiz, Bryan J. Holler, Ian Wong, John Stansberry, Estela Fernández-Valenzuela, Christopher R. Glein, Emmanuel Lellouch, Esa Vilenius, Csilla E. Kalup, Zsolt Regály, Róbert Szakáts, Gábor Marton, András Pál, Gyula M. Szabó   +20 more
doaj   +1 more source

GENERATION OF HIGHLY INCLINED TRANS-NEPTUNIAN OBJECTS BY PLANET NINE [PDF]

, 2016
The trans-Neptunian region of the solar system exhibits an intricate dynamical structure, much of which can be explained by an instability-driven orbital history of the giant planets.
K. Batygin, M. Brown
semanticscholar   +1 more source

Pole‐to‐Pole Vertical Ionospheric Profiles at Jupiter From JWST

Journal of Geophysical Research: Space Physics, Volume 130, Issue 8, August 2025.
Abstract We present the first pole‐to‐pole observations of Jupiter's ionosphere, capturing dawn and dusk vertical structure up to 5,000 km altitude using the James Webb Space Telescope (JWST), simultaneous to Juno's radio occultation experiments (ROX) in September 2023.
Paola I. Tiranti, H. Melin, L. Moore, K. L. Knowles, T. S. Stallard, J. O’Donoghue, K. Roberts, K. Mohamed, E. M. Thomas   +8 more
wiley   +1 more source

OSSOS. VI. Striking Biases in the Detection of Large Semimajor Axis Trans-Neptunian Objects [PDF]

, 2017
The accumulating but small set of large semimajor axis trans-Neptunian objects (TNOs) shows an apparent clustering in the orientations of their orbits.
C. Shankman, J. Kavelaars, M. Bannister, B. Gladman, S. Lawler, Ying-Tung Chen, M. Jakubik, N. Kaib, M. Alexandersen, S. Gwyn, J. Petit, K. Volk   +11 more
semanticscholar   +1 more source

Orbit of a Possible Planet X

The Astrophysical Journal
The plausibility of an unseen planet in the outer solar system, and the expected orbit and mass of such a planet, have long been a topic of inquiry and debate.
Amir Siraj, Christopher F. Chyba, Scott Tremaine   +2 more
doaj   +1 more source

The Properties and Origin of Kuiper Belt Object Arrokoth's Large Mounds

The Planetary Science Journal, 2023
We report on a study of the mounds that dominate the appearance of Kuiper Belt Object (486958) Arrokoth's larger lobe, named Wenu. We compare the geological context of these mounds and measure and intercompare their shapes, sizes/orientations ...
S. A. Stern, O. L. White, W. M. Grundy, B. A. Keeney, J. D. Hofgartner, D. Nesvorný, W. B. McKinnon, D. C. Richardson, J. C. Marohnic, A. J. Verbiscer, S. D. Benecchi, P. M. Schenk, J. M. Moore, The New Horizons Geology and Geophysics Investigation Team   +13 more
doaj   +1 more source

Colors and taxonomy of Centaurs and trans-Neptunian objects [PDF]

Astronomy and Astrophysics, 2010
The study of the surface properties of Centaurs and Trans-Neptunian Objects (TNOs) provides essential information about the early conditions and evolution of the outer Solar System. Due to the faintness of most of these distant and icy bodies, photometry currently constitutes the best technique to survey a statistically significant number of them.
Perna, Davide, Barucci, Maria Antonella, Fornasier, Sonia, Demeo, Francesca E., Alvarez-Candal, Alvaro, Merlin, Frédéric, Dotto, Elisabetta, Doressoundiram, Alain, de Bergh, Catherine   +8 more
openaire   +3 more sources

Influences of Non‐Oberbeck–Boussinesq Effects on Tracer Transport in Icy Ocean Worlds

Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract The subsurface oceans on icy satellites are potentially habitable. To understand their habitability, we need to know how tracers with various lifetimes distribute. Convection is the main vehicle for tracer transport, and we expect convection on icy satellites to differ from regular rotating convection, because as pressure increases, water's ...
Shuang Wang, Wanying Kang
wiley   +1 more source