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Updated: May 5, 2026
06:04
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 16, 2013
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A giant impact origin of Pluto-Charon.
1Southwest Research Institute, Boulder, CO 80302, USA. robin@boulder.swri.edu
Science (New York, N.Y.)
|February 1, 2005
Summary
Pluto and its large moon, Charon, likely formed from a giant impact, suggesting early Kuiper belt collisions between large celestial bodies. This impact may have created an intact Charon or a debris disk for its later accretion.
Area of Science:
- Planetary Science
- Astronomy
- Solar System Formation
Background:
- Pluto and Charon are key objects in the Kuiper belt, offering insights into solar system evolution.
- Understanding their origin is crucial for deciphering outer solar system formation processes.
Purpose of the Study:
- To investigate the plausibility of the Pluto-Charon system forming through a large collision.
- To explore the potential outcomes of such an impact event.
Main Methods:
- Utilizing hydrodynamic simulations to model the impact scenario.
- Analyzing the simulation results to determine the likelihood of different formation pathways.
Main Results:
- Hydrodynamic simulations indicate that a large collision is a plausible mechanism for forming the Pluto-Charon system.
- The impact likely resulted in the formation of an intact Charon.
- An alternative outcome suggests a debris disk orbiting Pluto, from which Charon later accreted.
Conclusions:
- The formation of Pluto and Charon via a significant impact event is strongly supported.
- These findings imply that collisions involving 1000-kilometer-class objects were common in the early inner Kuiper belt.
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