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					Originally Posted by HarryT  A question, if I may, for those who are familiar with Poul Anderson's work: 
Is the (excellent) novel, "Tau Zero", as sold, for example, by Amazon UK here , the same book as Baen's To Outlive Eternity , which says it's the original magazine version of the story, or is the novel "Tau Zero" expanded from the magazine story? | 
	
 Wiki page here: 
http://en.wikipedia.org/wiki/Tau_Zero
also:
http://www.isfdb.org/cgi-bin/title.cgi?1044
It appears the Baen book contains the short story on which the novel was based.