* Astronomy

Zond 2 was an automatic interplanetary station launched from a Tyazheliy Sputnik (64-078A) in Earth parking orbit towards Mars to test space-borne systems and to carry out scientific investigations.
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One of the two solar panels failed so only half the anticipated power was available to the spacecraft. After a mid-course manoeuvre, communications with the spacecraft were lost in early May, 1965.
The dormant spacecraft flew by Mars on 6 August 1965.