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1986 in science
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==Technology== * January 11 β The [[Sir Leo Hielscher Bridges|Gateway Bridge]] is opened in [[Brisbane]], Australia, the world's largest [[prestressed concrete]] single box bridge. * April 26 β [[Chernobyl disaster]]: An [[RBMK]] at [[Chernobyl Nuclear Power Plant]] in the [[Ukrainian Soviet Socialist Republic]] reaches [[prompt criticality]]. * December 23 β [[Rutan Voyager]] becomes the first aircraft to fly around the world without stopping or refueling, landing at [[Edwards Air Force Base]] in [[California]] after a nine-day trip piloted by [[Dick Rutan]] and [[Jeana Yeager]].
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