Day 2

Robinson
Pollack model takes 9Myr to form Saturn, too long compared to the observed lifetimes of protoplanetary disks ~2-3 Myr.
Include chemical evolution in planet formation. CH4 ice line should be moved outward. Also NH3 -- N2 plume
from Enceladus indicates the abundance of NH3. It accretes on grains with H2O and thus is important for the solid budget.
CH4 & CO ices are also important solid mass carriers for Uranus and Neptune.

Zoe
surface of KBO is heterogeneous ---- density and strength can be quite diverse. They can be disrupted more easily than previous simulations.