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/Notes/ Formation of Planets
NASA
Th
e s
tory
so
far:
NASA
NASA/JPL-Caltech/A. Noriega-Crespo (SSC/Caltech), Digital Sky Survey
NASA/JPL-Caltech/UIUC
http://www.redorbit.com/modules/reflib/article_images/6_a1ae8ebf66110513af3385295f837b59.jpg
Protoplanetary disk
Gas and dust left over from the formation of a
star.
NASA
http://www.maths.qmul.ac.uk/~masset/movies/flyby.png
Gravity
Begins pulling together
bits of rock and gas
NASA/JPL-Caltech/T. Pyle (SSC)
Planetesimals
Baby planets
NASA
NASA
Planetesimals
They’re violent
NASA
NASA/JPL-Caltech/T. Pyle (SSC)
Planets form
Planetesimals collide and grow larger until they become planets