Results 61 to 70 of about 34,434 (269)
Geophysical Research Letters, 2023 In situ exploration of Uranus has been limited to a single flyby encounter by the Voyager 2 spacecraft in January 1986. Nonetheless, new investigation has led to significant questions about the origin of energetic ions observed in the region between its ...
Ian J. Cohen +6 more
doaj +1 more source
Neptune and Uranus: ice or rock giants?
Philosophical Transactions of the Royal Society A, 2020 Existing observations of Uranus and Neptune’s fundamental physical properties can be fitted with a wide range of interior models. A key parameter in these models is the bulk rock:ice ratio and models broadly fall into ice-dominated (ice giant) and rock ...
N. Teanby, P. Irwin, J. Moses, R. Helled
semanticscholar +1 more source
Key Atmospheric Signatures for Identifying the Source Reservoirs of Volatiles in Uranus and Neptune [PDF]
Space Science Reviews, 2020 We investigate the enrichment patterns of several delivery scenarios of the volatiles to the atmospheres of ice giants, having in mind that the only well constrained determination made remotely, namely the carbon abundance measurement, suggests that ...
O. Mousis +7 more
semanticscholar +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
Uranus's complex internal structure
Astronomy & AstrophysicsUranus's bulk composition remains unknown. Although there are clear indications that Uranus's interior is not fully convective, and therefore has a non-adiabatic temperature profile, many interior models continue to assume an adiabatic interior.
A. Benno Neuenschwander +2 more
semanticscholar +1 more source
AerospaceFollowing recommendations from the 2023–2032 Planetary Science and Astrobiology Decadal Survey, we propose a novel Uranus exploration mission that is centered on using constellations of small spacecraft to observe the Uranus system.
Dylan Barnes, Paula do Vale Pereira
doaj +1 more source
Predictions of Auroral Electron Precipitation and Joule Heating at Uranus
Geophysical Research LettersThe precipitation of electrons and Joule heating are key processes through which energy is transferred from Uranus' magnetosphere to its upper atmosphere. These processes drive atmospheric ionization, thermospheric heating, and auroral emission at Uranus.
Daniel J. Gershman, George Clark
doaj +1 more source
Proceedings of the National Academy of Sciences of the United States of America, 2020 Significance Understanding the interior structure and dynamics of outer Solar System planets in terms of their component materials is a major scientific challenge.
Peihao Huang +8 more
semanticscholar +1 more source
Effect of non-adiabatic thermal profiles on the inferred compositions of Uranus and Neptune [PDF]
Monthly notices of the Royal Astronomical Society, 2019 It has been a common assumption of interior models that the outer planets of our solar system are convective, and that the internal temperature distributions are therefore adiabatic. This assumption is also often applied to exoplanets.
M. Podolak, R. Helled, G. Schubert
semanticscholar +1 more source
Earth's Future, Volume 14, Issue 2, February 2026.Abstract Future projections of climate change are uncertain, in part because of uncertainty in future greenhouse gas emissions. However, current widely used emission scenarios and related physical climate projections have no probabilities associated with them, presenting a challenge for risk‐informed climate adaptation decision making.
Jeremy Fyke, Neil C. Swart, David Huard
wiley +1 more source