Results 31 to 40 of about 6,735 (287)
Building giant-planet cores at a planet trap [PDF]
Astronomy & Astrophysics, 2007 in press in Astronomy and ...
Morbidelli, A. +3 more
openaire +8 more sources
Unseen urgency: Delay as the new denial
WIREs Climate Change, Volume 14, Issue 1, January/February 2023., 2023 Arizona 2020 (credit: Joseph Alexander). Abstract The scientific grounds for the urgency of action to limit climate change are relatively well‐understood. Much less well appreciated, however, are the contingent, but nevertheless profound, political reasons for the urgency of immediate robust action.
Henry Shue
wiley +1 more source
Formation of ammonia–helium compounds at high pressure
Nature Communications, 2020 Helium is generally considered too inert to be present in giant ice planet mantles. The authors, by first-principles calculations and crystal structure searches, find stable ammonia–helium compounds at the conditions of Uranus and Neptune’s upper mantles,
Jingming Shi +5 more
doaj +1 more source
The Planetary Science Journal, 2023 The tumultuous early era of outer solar system evolution culminated when Neptune migrated across the primordial Kuiper Belt (PKB) and triggered a dynamical instability among the giant planets.
William F. Bottke +8 more
doaj +1 more source
ELECTRODYNAMICS ON EXTRASOLAR GIANT PLANETS [PDF]
The Astrophysical Journal, 2014 16 pages, 22 figures, accepted by ...
Tommi Koskinen +4 more
openaire +3 more sources
Earth's Future, Volume 10, Issue 12, December 2022., 2022 Abstract The water‐energy‐food (WEF) nexus is a prominent approach for addressing today's sustainable development challenges. In our critical appraisal of the WEF, covering different approaches, drivers, enablers, and applications, we emphasize the situation across the Global South (Africa, Asia, Latin America and the Caribbean).
A. P. Hejnowicz +7 more
wiley +1 more source
Rings Beyond the Giant Planets [PDF]
, 2018 Until 2013, only the giant planets were known to host ring systems. In June 2013, a stellar occulation revealed the presence of narrow and dense rings around Chariklo, a small Centaur object that orbits between Saturn and Uranus. Meanwhile, the Cassini spacecraft revealed evidence for the possible past presence of rings around the Saturnian satellites ...
Sicardy, Bruno +5 more
openaire +4 more sources
Composition of massive giant planets [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractThe two current models for giant planet formation are core accretion and disk instability. We discuss the core masses and overall planetary enrichment in heavy elements predicted by the two formation models, and show that both models could lead to a large range of final compositions.
Ravit Helled +2 more
openaire +4 more sources
Masses and Densities of Dwarf Planet Satellites Measured with ALMA
The Planetary Science Journal, 2023 We have used the Atacama Large Millimeter/submillimeter Array to measure precise absolute astrometric positions and detect the astrometric wobble of dwarf planet Orcus and its satellite Vanth over a complete orbit.
Michael E. Brown, Bryan J. Butler
doaj +1 more source
Formation of the Giant Planets [PDF]
Progress of Theoretical Physics, 1980 The structure of a gaseous envelope surrounding a icy/rocky core is studied in consideration of radiative transfer. It is found that when the core grows beyond a critical core mass, the envelope cannot be in equilibrium and collapses onto the core to form a proto-giant planet.
openaire +4 more sources