How many planets to date have been observed orbiting stars other than the Sun?

gtho4

136 planets are known outside our Solar System @ 5th February 2005 : http://exoplanets.org Apr 05 05, 8:16 PM

gmackematix

History was made this year by two of them actually being observed rather than detected: http://www.nature.com/news/2005/050321/full/050321-9.html Apr 06 05, 1:26 AM

serpa

358 planets are known outside our solar system as of September 2009. http://exoplanets.org/ Sep 08 09, 3:20 PM

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