['< sod >\'\' [ [ voyager adventure 1 ] ]\'\' was unable to visit uranus because investigation of [ [ saturn ] ]\'s moon [ [ titan ( moon ) | titan ] ] was considered vital. this trajectory took\'\' voyager & nbsp ; journey 1\'\' safely out the plane of the [ [ also ecliptic ] ], ending its planetary science mission. < ref name = " swift1997 " > { { cite book | author = david w. swift | title = voyager tales : personal views of the grand tour | url = https : / / books. google. com / google books? id =... e - ngfqfq1lsc & pg = pa69 | [UNK] date = 1 january 1997 | publisher = nonprofit aiaa | isbn = 978 - 1 - 56347 - 252 - 7 | page = 69 } } < / ref > { { rp | 118 } } < eod > < sod >\'\' [ [ voyager 1 ] ]\'\' was unable to visit uranus because investigation of [ [ saturn ] ]\'s moon [ [ titan ( moon ) | titan ] ] was considered vital and more of a priority. this trajectory took\'\' voyager & nbsp ; 1\'\' out the plane of the [ [ ecliptic ] ], ending with its planetary science missions mission. < ref name = " swift1997 " > { { cite book | author = david w. swift | title = voyager tales : personal views of the grand tour | url = https : / / books. google. com / books? id = e - ngfqfq1lsc & pg = pa69 | date = 1 january 1997 | publisher = aiaa | isbn = 978 - 1 - 56347 - 252 - 7 | page = 69 } } < / ref > { { rp | 118 } } < eod >']