see <a href="http://www.cfa.harvard.edu/cfa/calendar/latest.html">http://www.cfa.harvard.edu/cfa/calendar/latest.html</a><br><br><span style="font-weight: bold;">Monday, October 23</span><br>12
noon: Solar, Stellar, and Planetary Sciences Division Seminar. "Giant
Planet Migration," Dr. Richard Edgar, University of Rochester. Pratt
Conference Room. <br><br>Abstract: Most extra-solar planets are
thought to have migrated to their present orbits via Type II migration
(locking to a viscous disc). By comparison with Type I migration
(differential Lindblad torques), this process has been little studied.
I shall present results from the first systematic test of Type II
theory.<br><br><br><span style="font-weight: bold;">Thursday, October 26</span><br>4:00
pm: Colloquium. "Detection of Low-Mass Extrasolar Planets by
Gravitational Microlensing," Dr. David Bennett, University of Notre
Dame. <br>Phillips Auditorium. <br>
<br>