Tags: Artificialsatellite, Satellite.
Vostok 4 (Russian: Восток-4 Orient 4 or East 4) was a mission in the Soviet space program. It was launched a day after Vostok 3 with cosmonaut Pavel Popovich on board—the first time that more than one manned spacecraft were in orbit at the same time. The two Vostok capsules came within 6.5 km (4.0 mi) of one another and ship-to-ship radio contact was established.The cosmonauts of Vostok 3 and 4 did not attempt rendezvous.
