Matches in DBpedia 2014 for { ?s ?p Proton (Russian: Протон) (formal designation: UR-500) is an expendable launch system used for both commercial and Russian government space launches. The first Proton rocket was launched in 1965 and the launch system is still in use as of 2014, which makes it one of the most successful heavy boosters in the history of spaceflight.. }
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- Proton_(rocket_family) comment "Proton (Russian: Протон) (formal designation: UR-500) is an expendable launch system used for both commercial and Russian government space launches. The first Proton rocket was launched in 1965 and the launch system is still in use as of 2014, which makes it one of the most successful heavy boosters in the history of spaceflight.".