EntityQ4055349· pop 5· linked from 35 articlesVanguard SLV-2Sign in to savefailed rocket launchConnectionsNOTS-EV-1 PilotEntitySputnik 3EntityVanguard 1AEntityEarthConceptSunConceptaluminiumEntityheliumEntitymagnesiumEntityInternational Standard Book NumberEntitysteelEntityX-rayEntitywattEntitypublic domainEntitykeroseneEntityhertzEntitynitric acidEntityångströmEntityUnited States NavyEntityGreenwich Mean TimeEntityorbital periodEntityCategoriesProject VanguardSatellite launch failuresSource attributionSpace accidents and incidents in the United StatesSpacecraft launched in 1958