Results 91 to 100 of about 42,848 (232)

Jovian Early Bombardment: planetesimal erosion in the inner asteroid belt

open access: yes, 2012
The asteroid belt is an open window on the history of the Solar System, as it preserves records of both its formation process and its secular evolution.
Coradini, Angioletta   +2 more
core   +1 more source

The origin of short-lived radionuclides and the astrophysical environment of solar system formation

open access: yes, 2008
Based on early solar system abundances of short-lived radionuclides (SRs), such as $^{26}$Al (T$_{1/2} = 0.74$ Myr) and $^{60}$Fe (T$_{1/2} = 1.5$ Myr), it is often asserted that the Sun was born in a large stellar cluster, where a massive star ...
Amelin Y.   +15 more
core   +1 more source

Petrofabrics in the CM chondrite Kolang: Evidence for non‐spherical chondrules in the protoplanetary disk

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 2, Page 190-205, February 2025.
Abstract The alignment of non‐spherical “flattened” chondrules into a petrofabric is a common feature of hydrated carbonaceous chondrite meteorites. This texture can form as a result of impacts at peak shock pressures exceeding 10 GPa. However, many carbonaceous chondrites with petrofabrics are unshocked.
Laura E. Jenkins   +6 more
wiley   +1 more source

Search for pre‐accretionary irradiation effects in calcium‐aluminum inclusions from the CV3 chondrite Allende

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 2, Page 247-272, February 2025.
Abstract Calcium‐aluminum‐rich inclusions (CAIs) are the first objects that formed in the solar accretion disk and therefore provide valuable insights into the evolution of the early solar system. A long‐standing question regarding this earliest formative period relates to the storage of CAIs in the 1–4 Myr time period between their formation and later
P. Ghaznavi   +3 more
wiley   +1 more source

Was Earth’s Water Acquired Locally during the Earliest Phases of the Solar System Formation?

open access: yesThe Astrophysical Journal Letters
The origin of the terrestrial water remains debated, as standard solar system formation models suggest that Earth formed from dry grains, inside the snowline of the protosolar nebula (PSN).
Lise Boitard-Crépeau   +4 more
doaj   +1 more source

Zirconium isotope composition indicates s‐process depletion in samples returned from asteroid Ryugu

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 1, Page 3-16, January 2025.
Abstract Nucleosynthetic isotope variations are powerful tracers to determine genetic relationships between meteorites and planetary bodies. They can help to link material collected by space missions to known meteorite groups. The Hayabusa 2 mission returned samples from the Cb‐type asteroid (162173) Ryugu.
Maria Schönbächler   +89 more
wiley   +1 more source

Dust growth in protoplanetary disks - a comprehensive experimental/theoretical approach

open access: yes, 2010
More than a decade of dedicated experimental work on the collisional physics of protoplanetary dust has brought us to a point at which the growth of dust aggregates can - for the first time - be self-consistently and reliably modelled.
Dominik   +20 more
core   +1 more source

Ice Lines, Planetesimal Composition and Solid Surface Density in the Solar Nebula

open access: yes, 2008
To date, there is no core accretion simulation that can successfully account for the formation of Uranus or Neptune within the observed 2-3 Myr lifetimes of protoplanetary disks.
A'Hearn   +95 more
core   +1 more source

Magma Ocean Evolution at Arbitrary Redox State

open access: yesJournal of Geophysical Research: Planets, Volume 129, Issue 12, December 2024.
Abstract Interactions between magma oceans and overlying atmospheres on young rocky planets leads to an evolving feedback of outgassing, greenhouse forcing, and mantle melt fraction. Previous studies have predominantly focused on the solidification of oxidized Earth‐similar planets, but the diversity in mean density and irradiation observed in the low ...
Harrison Nicholls   +3 more
wiley   +1 more source

The Bombardment History of the Giant Planet Satellites

open access: yesThe Planetary Science Journal
The origins of the giant planet satellites are debated, with scenarios including formation from a protoplanetary disk, sequential assembly from massive rings, and recent accretion after major satellite–satellite collisions.
William F. Bottke   +9 more
doaj   +1 more source

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