Eulalia asteroid family Archives - Astrobiology

Schematic illustrating the evolutionary stages of the Eulalia asteroid family. (a) The Eulalia parent body resides near the Jupiter 3:1 mean-motion resonance (J3:1). (b) Catastrophic disruption of the parent body occurs, with approximately 50% of the fragments being directly injected into the J3:1, where they can be driven into the planet-crossing region. (c) Post-disruption dynamical evolution, during which an estimated 50% of the surviving fragments are expected to eventually migrate toward the J3:1 resonance via Yarkovsky thermal forces. -- astro-ph.EP

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An 800-Million-Year-Old Impact Shower on the Terrestrial Planets from the Breakup of the Eulalia Parent Body

by Keith CowingJune 7, 2026June 7, 2026

Multiple studies have proposed a substantial surge in large lunar impacts approximately 800 million years ago (Ma).