EntityQ1085985· pop 25· linked from 278 articlesZond 1Sign in to savespacecraft of the Soviet Zond programConnectionsElektronEntityZond 8EntityZond programEntityobservations and explorations of VenusEntitywaterEntityVenusEntitySoviet UnionConceptInternational Standard Book NumberEntityX-rayEntityWayback MachineEntityspacecraftEntityanalytical chemistryEntitygamma rayEntityBaikonur CosmodromeEntitySergei KorolevEntityCassini−HuygensEntityorbital periodEntityapsisEntityvacuum tubeEntityGalileo missionEntityCategories1964 in the Soviet Union3MVDerelict satellites in heliocentric orbitDerelict space probesSoviet missions to VenusSpacecraft launched in 1964Venus flybysZond program