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Zond 4, a member of the Soviet Zond program, was a short flight that was one of the first Soviet experiments towards manned spaceflight. It was designed to test the space-worthiness of the new capsule and to gather data about flights in circumterrestrial space . It was deliberately launched away from the moon to avoid trajectory complications from its gravitational pull.

After launching on March 2, 1968, it reached 300,000 km before coming back down. Operators attempted to bring it in with a skip reentry, but they made the angle too steep and it ended up plunging into the atmosphere early over West Africa. Ground control set off the self-destruct mechanism over the Gulf of Guinea at an altitude of 10 km.

External References

NASA (NSSDC) information on Zond 4

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Topics: Zond 4, Zond Program, Zond 3, Zond 5, Zond 6, Zond 7, Zond 8...

Zond programThe Zond program was a series of Soviet unmanned space missions from 1964 to 1970 to test spacecraft intended for manned flights around the moon. While the lunar mission was the mission's primary goal from 1968 on, the first three missions of the program.	Zond 3Zond 3 a member of the Soviet Zond program, was the first Zond spacecraft to successfully complete its mission (a Lunar flyby) and took a number of amazing photographs for its time, though it is believed that it was initially intended to fly by Mars with	Zond 5Zond 5 a member of the Soviet Union's Zond program, was launched from a Tyazheliy Sputnik (68-076B) in Earth parking orbit to make scientific studies during a lunar flyby and to return to Earth. On September 18, 1968, the spacecraft flew around the Moon.
Zond 6Zond 6 a member of the Soviet Union's Zond program, was launched on a lunar flyby mission from a parent satellite (68-101B) in Earth parking orbit. The spacecraft, which carried scientific probes including cosmic ray and micrometeoroid detectors, photogra	Zond 7Zond 7 a member of the Soviet Union's Zond program and the only truly successful test of the Soyuz 7K-L1, was launched towards the Moon from a mother spacecraft (69-067B) on a mission of further studies of the Moon and circulmunar space, to obtain color p	Zond 8Zond 8 a member of the Soviet Union's Zond program, was launched from an Earth orbiting platform, Tyazheliy Sputnik (70-088B), towards the Moon. The announced objectives were investigations of the moon and circumlunar space and testing of onboard systems
Zonda wind	Zond 1	Zond 2
Zond 4

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