🌐EnglishEnglishFrançaisItalianoNederlands한국어中文日本語EntityQ48997917· pop 6· linked from 7 articlesMissing baryon problemdiscrepency between observed and predicted amounts of ordinary matterAvailable in 6 languagesFrançais中文ItalianoEstonian한국어via Wikidata sitelinks · CC0Connectionswarm–hot intergalactic mediumEntityplanetEntityCategoriesBaryonsPhysical cosmology