“…However, this possibility is inconsistent with current observations and estimations of NIC impact rates in the Jovian system. Previous models expected that the impact probability of the NICs in the Jovian system is much lower (1‐10% or even lower) than the ecliptic comets (Dones et al, ; Zahnle et al, , ). However, this is possibly partly because the observations of long‐period comets are more difficult and, thus, highly biased (Levison & Dones, ), and the modeling of NICs are also more difficult (Zahnle et al, ).…”