Summary
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1 Sample Definition And Size
The study simulated tens of thousands of meteoroid ejecta particles from Earth and Mars using n‑body simulations. Specifically, approximately 43,500 particles were ejected from Earth and 40,500 from Mars in the 10 Myr simulations; a subset (9,000 from Earth and 6,000 from Mars) were extended to 30 Myr simulations ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC3870607/?utm_source=openai)).
2 Study Type
This is a computational study using n‑body simulations (hybrid symplectic integrator MERCURY) to model the trajectories of ejecta from Earth and Mars over time, assessing transfer probabilities to other Solar System bodies ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC3870607/?utm_source=openai)).
3 Conflicts Of Interest
No conflicts of interest are declared in the accessible metadata or full text ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC3870607/?utm_source=openai)).
4 Results Summary
Key findings include: from Earth ejecta, probabilities over 3.5 Gyr of transfer were ~0.041% to Jupiter (≈83,000 fragments; ~2.8×10^10 kg) and ~0.0069% to Saturn (≈14,000 fragments; ~4.7×10^9 kg); from Mars ejecta, ~0.04% to Jupiter (≈320,000 fragments; ~1.1×10^11 kg) and <0.0025% to Saturn (<20,000 fragments; <6.8×10^9 kg) ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC3870607/?utm_source=openai)). Simulations of moon impacts yielded expectation values of one to a few objects reaching Io, Europa, Ganymede, Callisto, Enceladus, and Titan from Earth since the Late Heavy Bombardment, with slightly higher numbers from Mars; Mars‑to‑Saturn moon transfers were less likely but not entirely ruled out ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC3870607/?utm_source=openai)).