Some random remarks about the article (I am no expert on the subject, so I won't comment on content): 
 *"The first launch attempt on February 16, 1986 was scrubbed" should maybe rephrased? 
 *Some paragraphs are intensely wikified while others are not. 
 *Quite some of the references are not properly formatted. 
 *units: in one instance tonnes and short tonnes are given, in other instances just tonnes 
 Would be nice to bring this to FA quality.  ]