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Zond 4
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Zond 04
Zond 4 Mission to Our Solar System Zond 4 Mission to Earth's Moon

Goals: To flight-test a vacant 2-person spacecraft in preparation for sending cosmonauts to the Moon and back. It may also have been intended to investigate near-Earth space.

Accomplishments: It flew about 300,000 to 350,000 km from Earth in the direction opposite that of the Moon, possibly to avoid the Moon's gravitational influence, but possibly because of a malfunction in the attitude-control system. It returned to Earth but was deliberately destroyed about 10 km over the Gulf of Guinea when a system malfunctioned.

   

Key Dates
2 Mar 1968:  Launch
Status: Partial Success
Fast Facts
Zond 04 Facts Zond 4 was an engineering test in support of the Soviet lunar exploration program.

It was sent into space in the opposite direction of the Moon to test systems without lunar interference.

Two cosmonauts in an isolated bunker communicated with the flight-control center via a relay onboard the spacecraft to simulate communication between cosmonauts in space and controllers on Earth.
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Last Updated: 2 Dec 2010