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An early giant planet instability recorded in asteroidal meteorites

Space Sciences

An early giant planet instability recorded in asteroidal meteorites

G. H. Edwards, C. B. Keller, et al.

Explore the intriguing world of giant planet migration with groundbreaking research by Graham Harper Edwards, C. Brenhin Keller, Elisabeth R. Newton, and Cameron W. Stewart. This study analyzes thermochronologic data from asteroidal meteorites to reveal the hidden timescales of planetary dynamics around the Sun, linking a significant bombardment event to the early instability of giant planets.

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Playback language: English
Abstract
Giant planet migration is common in galaxies, but its timescales are poorly understood. This study uses thermochronologic data from asteroidal meteorites to quantify these timescales. Analysis of ⁴⁰K-⁴⁰Ar system ages reveals a bombardment event beginning 11.3<sup>+9.5</sup><sub>-6.6</sub> Myr after the Sun formed, associating a giant planet instability with the dissipation of the protoplanetary disk.
Publisher
Nature Astronomy
Published On
Aug 15, 2024
Authors
Graham Harper Edwards, C. Brenhin Keller, Elisabeth R. Newton, Cameron W. Stewart
Tags
giant planet migration
thermochronology
asteroidal meteorites
bombardment event
protoplanetary disk
planetary instability

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