Multi-Impact Model for Moon and Binary Asteroid Formation
Published:Dec 26, 2025 20:45
•1 min read
•ArXiv
Analysis
This paper proposes a novel model for the formation of the Moon and binary asteroids, avoiding catastrophic events. It focuses on a multi-impact scenario involving a proto-satellite disk and asteroid impacts, offering a potential explanation for the Moon's iron deficiency and the stability of satellite orbits. The model's efficiency in merging ejecta with the disk is a key aspect.
Key Takeaways
- •Proposes a multi-impact model as an alternative to catastrophic events for Moon and binary asteroid formation.
- •Explains the Moon's iron deficiency through asteroid impacts on Earth's mantle.
- •Highlights the role of a prograde proto-satellite disk in stabilizing satellite orbits.
- •Emphasizes the efficiency of the multi-impact mechanism in merging ejecta with the disk.
Reference
“The model proposes that most of the lunar material was ejected from Earth's mantle by numerous impacts of large asteroids, explaining the lunar iron deficiency.”