Soyuz 1 (Russian Союз 1, Union 1) was part of the Soviet Union's space program and was launched into orbit on April 23, 1967, carrying a single cosmonaut, Colonel Vladimir Komarov, who was killed when the spacecraft crashed during its return to Earth.This was the first in-flight fatality in the history of spaceflight.
Launched at 03:35 local time, this was also the first night launch of a human space vehicle. 
Salyut 1 (DOS-1) (Russian: Салют-1; English translation: Salute 1) was launched April 19, 1971. It was the first space station to ever orbit earth. Its first crew launched in Soyuz 10 but were unable to board it due to a failure in the docking mechanism; its second crew launched in Soyuz 11 and remained on board for 23 productive days. Unfortunately, a pressure-equalization valve in the Soyuz 11 reentry capsule opened prematurely when the crew returned to Earth, killing all three. Salyut 1 reentered Earth's atmosphere October 11, 1971.
Salyut 1 (DOS-1) (Russian: Салют-1; English translation: Salute 1) was launched April 19, 1971. It was the first space station to ever orbit earth. Its first crew launched in Soyuz 10 but were unable to board it due to a failure in the docking mechanism; its second crew launched in Soyuz 11 and remained on board for 23 productive days. Unfortunately, a pressure-equalization valve in the Soyuz 11 reentry capsule opened prematurely when the crew returned to Earth, killing all three. Salyut 1 reentered Earth's atmosphere October 11, 1971.
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