research
The Moon-Making Debris Could Not Stay Put
Simulations found stellar tides and high impact speeds can strip or prevent the disks needed to assemble large moons close to a star.
Summary
Simulations found stellar tides and high impact speeds can strip or prevent the disks needed to assemble large moons close to a star.
Simulations of giant impacts around close-in planets identify a bottleneck for forming large exomoons. At ultra-short orbital periods, impacts produced almost no bound debris disk; around ten-day periods, stellar tides truncated and depleted disks, while higher encounter speeds made outcomes more destructive. Retrograde impacts partly offset the loss in some cases. The preprint models formation conditions and does not report an observed exomoon.
Why it matters
Simulations found stellar tides and high impact speeds can strip or prevent the disks needed to assemble large moons close to a star.
Limits and context
- The preprint models formation conditions and does not report an observed exomoon.
Key claims
Simulations found stellar tides and high impact speeds can strip or prevent the disks needed to assemble large moons close to a star.
Qualification: The preprint models formation conditions and does not report an observed exomoon.
Evidence: source-2026-08-06-014
Sources
- arXiv preprint 2608.04512arXiv · primary research
Corrections
No corrections have been recorded for this story.