Formation of Uranus and Neptune (Standard Model)
- If we put planetary embryos beyond Saturn and intergrates their
orbits nothing happens!
- However, the standard model works for the terrestrail planets!
- So, what is different?
- Strong gravitational scattering can only occur if mutual
attraction is stronger than attraction of the Sun.
- If objects are close to the Sun then this distance is small
- If objects are far from the Sun then this distance is large
- So far from the Sun, two objects are more likely to scatter
- So the system gets excited and nothing hits.