Results 51 to 60 of about 2,093,691 (201)

Production of Oxidants by Ion Bombardment of Icy Moons in the Outer Solar System

Advances in Astronomy, Volume 2011, Issue 1, 2011., 2011
Our groups in Brazil, France and Italy have been active, among others in the world, in performing experiments on physical‐chemical effects induced by fast ions colliding with solids (frozen gases, carbonaceous and organic materials, silicates, etc.) of astrophysical interest. The used ions span a very large range of energies, from a few keV to hundreds
Philippe Boduch, Enio Frota da Silveira, Alicja Domaracka, Oscar Gomis, Xue Yang Lv, Maria Elisabetta Palumbo, Sergio Pilling, Hermann Rothard, Eduardo Seperuelo Duarte, Giovanni Strazzulla, Francois Dulieu   +10 more
wiley   +1 more source

Perspectives on the distribution of orbits of distant Trans-Neptunian objects [PDF]

, 2020
Looking at the orbits of small bodies with large semimajor axes, we are compelled to see patterns. Some of these patterns are noted as strong indicators of new or hidden processes in the outer Solar System, others are substantially generated by observational biases, and still others may be completely overlooked. We can gain insight into the current and
Kavelaars, J. J., Lawler, Samantha M., Bannister, Michele T., Shankman, Cory   +3 more
openaire   +3 more sources

The New Horizons Extended Mission Target: Arrokoth Search and Discovery

The Planetary Science Journal
Following the Pluto flyby of the New Horizons spacecraft, the mission provided a unique opportunity to explore the Kuiper Belt in situ. The possibility existed to fly by a Kuiper Belt object (KBO), as well as to observe additional objects at distances ...
Marc W. Buie, John R. Spencer, Simon B. Porter, Susan D. Benecchi, Alex H. Parker, S. Alan Stern, Michael Belton, Richard P. Binzel, David Borncamp, Francesca DeMeo, S. Fabbro, Cesar Fuentes, Hisanori Furusawa, Tetsuharu Fuse, Pamela L. Gay, Stephen Gwyn, Matthew J. Holman, H. Karoji, J. J. Kavelaars, Daisuke Kinoshita, Satoshi Miyazaki, Matt Mountain, Keith S. Noll, David J. Osip, Jean-Marc Petit, Neill I. Reid, Scott S. Sheppard, Mark Showalter, Andrew J. Steffl, Ray E. Sterner, Akito Tajitsu, David J. Tholen, David E. Trilling, Harold A. Weaver, Anne J. Verbiscer, Lawrence H. Wasserman, Takuji Yamashita, Toshifumi Yanagisawa, Fumi Yoshida, Amanda M. Zangari   +39 more
doaj   +1 more source

Steeper Scattered Disks Buckle Faster

The Astrophysical Journal Letters, 2023
Disks of low-mass bodies scattered by giant planets to large semimajor axis and constant periapsis orbits are vulnerable to a buckling instability. This instability exponentially grows orbital inclinations, raises periapsis distances, and coherently ...
Alexander Zderic, Ann-Marie Madigan
doaj   +1 more source

Ozone Production by Electron Irradiation of Regolith Ice: Laboratory Study for the Icy Moons

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract We irradiate fine‐grained regolith pure water ice in ultra high vacuum with 5keV $5\,\text{keV}$ and 10keV $10\,\text{keV}$ electrons to study the radiolysis of water ice. The ice regolith is designed to closely mimic the physical characteristics of the surfaces of the icy moons of the Solar System.
Lorenzo Obersnel, André Galli, Rico G. Fausch, Rafael Ottersberg, Peter Wurz   +4 more
wiley   +1 more source

Large‐Angle Anomalies in the CMB

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We review the recently found large‐scale anomalies in the maps of temperature anisotropies in the cosmic microwave background. These include alignments of the largest modes of CMB anisotropy with each other and with geometry and direction of motion of the solar ssystem, and the unusually low power at these largest scales.
Craig J. Copi, Dragan Huterer, Dominik J. Schwarz, Glenn D. Starkman, Eiichiro Komatsu   +4 more
wiley   +1 more source

Rotation and Mutual Eclipse Events Season in the Kuiper Belt: (524366) 2001 XR254

The Astronomical Journal
(524366) 2001 XR _254 is a dynamically cold classical Kuiper Belt object that is a nearly equal-sized wide binary whose upcoming mutual event season makes it a particularly valuable target for physical characterization.
Audrey Thirouin, William M. Grundy, Scott S. Sheppard, Keith S. Noll, José María Gómez-Limón, Benjamin Proudfoot   +5 more
doaj   +1 more source

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

Search for small trans-Neptunian objects by the TAOS project [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractThe Taiwan-America Occultation Survey (TAOS) aims to determine the number of small icy bodies in the outer reach of the Solar System by means of stellar occultation. An array of 4 robotic small (D=0.5 m), wide-field (f/1.9) telescopes have been installed at Lulin Observatory in Taiwan to simultaneously monitor some thousand of stars for such ...
Chen, W., Alcock, C., Axelrod, T., Bianco, F., Byun, Y., Chang, Y., Cook, K., Dave, R., Giammarco, J., Kim, D., King, S., Lee, T., Lehner, M., Lin, C., Lin, H., Lissauer, J., Marshall, S., Meinshausen, N., Mondal, S., de Pater, I., Porrata, R., Rice, J., Schwamb, M., Wang, A., Wang, S., Wen, C., Zhang, Z.   +26 more
openaire   +2 more sources