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Saturday, 29 January 2011

Yale: Frontiers and Controversies in Astrophysics, Lecture 5

ASTR 160 - Frontiers and Controversies in Astrophysics
Spring 2007
Source: Yale University, Open Yale Courses

First 10 minutes: some comments about assignment "Is the controversy about Pluto a scientific controversy?"; science can be affected by culture.  Motion of star and planet around the center of mass.  Graph of radial velocities interpreted as a system containing 3 planets.  Back to "hot jupiters":  discovery of 51 Peg b shows the importance of "expecting the unexpected". Alternative explanations of hot jupiters (double star systems, pulsating stars) proved wrong.

See other lectures in this series.


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