Launched on Vostok, the first spacecraft manned by humans to leave Earth's atmosphere

The Vostok (Russian: Восток, translated as East) was a type of spacecraft built by the Soviet Union's space programme for human spaceflight.
The Vostok spacecraft was originally designed for use both as a camera platform (for the Soviet Union's first spy satellite program, Zenit) and as a manned spacecraft. This dual-use design was crucial in gaining Communist Party support for the program. The basic Vostok design has remained in use for some forty years, gradually adapted for a range of other unmanned satellites. The descent module design was reused, in heavily-modified form, by the Voskhod programme.