Roughly 4.5 Gyr ago, the Solar System formed in a disk surrounding
the proto-Sun. Within this disk, the gas giants grew to their
current sizes in a few Myr; the rocky planets took a few tens of
Myr to reach their present masses.
Besides keeping track of the myriad objects in the Solar System,
SSP scientists use data on the compositions, masses, and positions
of these objects along with theoretical models to learn how planets
form and evolve in time.
ICQ Comet Information
Minor Planet Center
Numerical simulations of planet formation
Origins of Life Initiative
Daniel W. E. Green,
Brian G. Marsden,
Ursula B. Marvin,
Gareth V. Williams