Boing Boing has a link to a list of discovered planets and technology that is used to identify them. The direct link is The Extrasolar Planets Encyclopedia . It made wonder if there were not a global technique that would give a reasonable estimate of the number of planets in the galaxy , at least. It would seem that the nature of a sun with planets is that its center of mass is variable and that this produces a kind of effect that would be evident over time using statistical methods on a galactic scale. The variations in its relative parallax would produce a cumulative difference in the uncertainty of measurement that could be a measure. It would seem that some artful analysis using thermodynamics in a unique way might give a general indicator, without proving a planet formation theory. It gets added to the list of search and integrate techniques that will be applied against relational databases. ADDED: It seems that angular velocity of all stars in general would produce a long term variance about the Lyman line which could be isolated by the integration of the measurement series interval differences and not the gross sum of variation.
Things just keep getting better. Here is a link to the new Google translate interface that actually speaks the answers very well.
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