🌐EnglishEnglishDeutschEspañolFrançaisItalianoSvenskaTiếng ViệtРусскийالعربية日本語EntityQ1414476· pop 6· linked from 31 articles1621 in scienceoverview of natural science-related events during the year of 1621Available in 6 languagesFrançaisРусскийHungarianNorwegianzh_min_nanvia Wikidata sitelinks · CC0Connectionslist of years in scienceEntityChinaCountryCategories1620s in science1621 in science17th century in science