1. /Notes/ Formation of Planets
NASA
/Notes/ Formation of Planets

2. NASA
The story so far:

3. NASA/JPL-Caltech/A. Noriega-Crespo (SSC/Caltech), Digital Sky Survey

4. NASA/JPL-Caltech/UIUC

6. Gas and dust left over from the formation of a star.
Protoplanetary disk
NASA
Gas and dust left over from the formation of a star.

7. Begins pulling together
Gravity
Begins pulling together
bits of rock and gas

8. Planetesimals
NASA
Baby planets
NASA/JPL-Caltech/T. Pyle (SSC)

9. NASA
Planetesimals

10. NASA
They’re violent

11. NASA/JPL-Caltech/T. Pyle (SSC)
Planets form
Planetesimals collide and grow larger until they become planets