Results 71 to 80 of about 33,171 (317)
The Astronomical JournalR. A. Jacobson determined the orbits of the Uranian satellites, the masses of Uranus and its satellites, and the orientation of the pole of Uranus from Earth-based astrometry, Earth-based ring occultations, and observations acquired with the Voyager 2 ...
Robert A. Jacobson, Ryan S. Park
doaj +1 more source
Thermal Evolution of Uranus with a Frozen Interior [PDF]
arXiv, 2020 The intrinsic luminosity of Uranus is a factor of 10 less than that of Neptune, an observation that standard giant planetary evolution models, which assume negligible viscosity, fail to capture. Here we show that more than half of the interior of Uranus is likely to be in a solid state, and that thermal evolution models that account for this high ...
arxiv
Pressure‐Driven Reactivity in Dense Methane‐Nitrogen Mixtures
Angewandte Chemie International Edition, EarlyView.CH4 and N2 are abundant molecules in our solar system and are the primary constituents of Titan's atmosphere. Under extreme pressures and temperatures within a diamond anvil cell, CH4 and N2 are demonstrated to react to form a range of compounds, dependent on the conditions and initial concentrations.
Hannah A. Shuttleworth +13 more
wiley +1 more source
Assessing the contribution of Centaur impacts to ice giant luminosities
, 2015 Voyager 2 observations revealed that the internal luminosity of Neptune is an order of magnitude higher than that of Uranus. If the two planets have similar interior structures and cooling histories, the luminosity of Neptune can only be explained by ...
Dodson-Robinson, Sarah E.
core +1 more source
The Anatomical Record, EarlyView.Abstract Plutonium was discovered and first synthesized in the early 1940's. Several isotopes of plutonium are used in nuclear technologies, 238Pu for heat generation and 239Pu for energy production and weapons. Both isotopes emit alpha particles, which pose a significant radiation hazard when incorporated into the body.
Scott C. Miller
wiley +1 more source
THE WAVE PRINCIPLE OF THE DISTRIBUTION OF SUBSTANCE IN SOLAR SYSTEM
Odessa Astronomical Publications, 2017 The wave principle of planet system formation and systems of satellites of Jupiter, Saturn and Uranus in the Solar system are considered.
V. A. Smirnov
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Stellar Physics and General Relativity
Astronomische Nachrichten, EarlyView.ABSTRACT The general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
wiley +1 more source
Crantor, a short-lived horseshoe companion to Uranus [PDF]
A&A 551, A114 (2013), 2013 Stable co-orbital motion with Uranus is vulnerable to planetary migration but temporary co-orbitals may exist today. So far only two candidates have been suggested, both moving on horseshoe orbits: 83982 Crantor (2002 GO9) and 2000 SN331. (83982) Crantor is currently classified in the group of the Centaurs by the MPC although the value of its orbital ...
arxiv +1 more source
The Planetary Science JournalMeasurements made by Voyager 2 during its flyby of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone.
William R. Saunders +4 more
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Dynamical Interactions and Mass Loss within the Uranian System
The Planetary Science Journal, 2023 The origin and evolution of planetary rings and moons remains an active area of study, particularly as they relate to the impact history and volatile inventory of the outer solar system.
Stephen R. Kane, Zhexing Li
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