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Zond 01
Zond 1 Mission to Venus

Goals: Zond 1 was intended to be a Venus impact probe, but it wound up being an inert flyby that accomplished some science before contact was lost.

Accomplishments: The Soviets lost contact with the spacecraft about halfway through its journey, but not before making two major course corrections -- the first time such actions were performed on a Soviet interplanetary spacecraft. After Zond 1 flew by Venus at a range of about 100,000 km (62,000 miles), the Soviets published some data on cosmic-ray flux that Zond 1 had measured.

Key Dates
2 Apr 1964:  Launch
25 May 1964:  Contact Lost
19 Jul 1964:  Venus Flyby
Status: Partial Success
Fast Facts
Zond 01 Facts This was the first course corrections performed on a Soviet interplanetary spacecraft.

The spacecraft ended up in an heliocentric (Sun-centered) orbit.

Zond means probe in Russian.
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Last Updated: 2 Dec 2010