Matches in DBpedia 2015-10 for { ?s ?p "As of December 2013, sixty-one countries have operated artificial satellites; the first being the Soviet Union in 1957 with Sputnik 1."@en }
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- Timeline_of_first_satellites_by_country abstract "As of December 2013, sixty-one countries have operated artificial satellites; the first being the Soviet Union in 1957 with Sputnik 1.".
- Timeline_of_first_satellites_by_country comment "As of December 2013, sixty-one countries have operated artificial satellites; the first being the Soviet Union in 1957 with Sputnik 1.".