Home›Physics experiments›Gravity Probe B🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtРусскийالعربيةفارسی中文日本語EntityQ836799· pop 23· linked from 136 articlesGravity Probe BAlso known as GP-Bspace observatory to test frame dragging and geodetic effectWikidata factsDiameter2.6Mass3334Official websiteeinstein.stanford.eduImageArtist concept of Gravity Probe B.jpgLength6.4Show 4 more factsCommons categoryGravity Probe BUTC date of spacecraft launch2004-04-20short nameGP-Bcapital cost750000000Sources (5)space.skyrocket.deAvailable in 22 languagesEspañolFrançaisDeutsch中文РусскийPortuguêsItalianoالعربيةCatalanEstonianFinnishConnectionsgyroscopeEntityAlbert EinsteinPersonCategoriesPhysics experimentsSatellites orbiting EarthSpacecraft launched by Delta II rocketsSpacecraft launched in 2004Tests of general relativity