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Project Progress

The article aimed to introduce the reader to the vexing enigmas of Saturn’s largest satellite – a world large enough to make a respectable planet, were it to orbit the Sun rather than Saturn. Titan was deemed important enough to deflect Voyager 1 from a course that could have taken it to an encounter with Pluto, instead to sail briefly past Titan for a tantalizing first encounter that answered too few questions (how big?) and left too many (what does the surface look like?)

http://www.geochemsoc.org/publications/geochemicalnews/gn144sep10/titantheenduringenigma.htm