EntityQ1166021· pop 6· linked from 172 articlesExplorer 13Sign in to saveAmerican satelliteConnectionsExplorers ProgramEntitySunConceptVirginiaEntitycopperEntityNASAConceptresistorEntitypublic domainEntityGreenwich Mean TimeEntitysolar cellEntitystainless steelEntityorbital periodEntityapsisEntityVostok 1Entitylow Earth orbitEntitylaunch vehicleEntityorbital inclinationEntitypiezoelectricityEntityExplorer 1EntityphotoresistorEntityVenera 1EntityCategories1961 in spaceflightExplorers ProgramSource attributionSpacecraft launched in 1961