Editing Zond program (section)

==Missions based on the 3MV planetary probe==
[[File:Zond 2.jpg|thumb|right|150px|Zond 2 (interplanetary) part of 3MV family]]

{{main|3MV planetary probe}}

The first three missions were based on the model [[3MV planetary probe]], intended to explore [[Venus]] and [[Mars]]. After two failures, [[Zond 3]] was sent on a test mission, becoming the second spacecraft to photograph the far side of the Moon (after [[Luna 3]]). It then continued out to the orbit of Mars in order to test telemetry and spacecraft systems.