Formation of the Solar System
Collapse of cloud of gas, dust & ice
- 4.6 billion years ago,
- Swirling, disk-shaped,
- Sun formed at centre of ëSolar Nebulaí.
Inner planets form through accretion of dust particles to planitesimals into protoplanets.
- Collisions & cratering dominate for 150 Myrs.
Outer planets form through accretion of gas onto rocky protoplanetary cores.