🌐EnglishEnglishFrançaisPolskiفارسی中文日本語EntityQ3363554· pop 8· linked from 21 articlesdeceleration parameterdimensionless measure of the cosmic acceleration of the expansion of spaceAvailable in 8 languagesFrançaisPortuguêsCatalanPolskiSlovakUkrainianفارسیvia Wikidata sitelinks · CC0ConnectionsHubble–Lemaître lawEntityexpansion of the universeEntityCategoriesPhysical cosmology