🌐EnglishEnglishDeutschEspañolFrançaisNederlandsPolskiPortuguêsالعربية한국어EntityQ5050328· pop 7· linked from 11 articlesCastle UnionAlso known as Union1954 hydrogen bomb testWikidata factsImageCastle Union.jpgSources (3)nnss.govwikidata.orgjohnstonsarchive.netvia Wikidata · CC0On the mapAvailable in 6 languagesEspañolPortuguêsالعربيةPolski한국어via Wikidata sitelinks · CC0Connectionsnuclear weapons testingEntityMarshall IslandsCountryCategories1950s in the Marshall Islands1954 in military history1954 in the environment1954 in the Trust Territory of the Pacific IslandsApril 1954 in OceaniaExplosions in 1954Nuclear testing at Bikini Atoll