[Baps] Planet formation talk - Peter Goldreich (TODAY)

[Sarah T. Stewart-Mukhopadhyay]

Harvard-Smithsonian Astronomy Colloquium - TODAY, 4:00 pm, Preceded by tea
at 3:30 pm. Phillips Auditorium

Raymond and Beverly Sackler Distinguished Lecture in Astronomy
<http://cfa-www.harvard.edu/cfa/colloquia/latest.html> 
Final Stages of Planet Formation
Peter Goldreich
Institute for Advanced Study. 

Abstract: My lecture will address three major questions regarding solar
system planets. What determined their number? Why are their orbits nearly
circular and coplanar? How long did they take to form? Answers to these will
be given in terms of: stability against large scale chaos; dynamical
friction by small bodies; and the accretion rate at the geometrical cross
section in the inner planet region and the ejection rate at the
gravitationally enhanced cross section in the outer. 

http://cfa-www.harvard.edu/cfa/colloquia/latest.html -- directions

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