8 Greatest Failures of the Soviet Space Program

The Soviet space program, despite early triumphs like Sputnik and Yuri Gagarin, was marred by catastrophic failures. On October 24, 1960, the R-16 rocket exploded at Baikonur Cosmodrome, killing about 150 people, including chief director Marshal Mitrofan Nedelin. The Vostok 2 mission in August 1961 saw cosmonaut Gherman Titov suffer acute space sickness and a near-fatal reentry when the service module failed to detach. Soyuz 1 launched on April 23, 1967, with Vladimir Komarov; after technical failures, the parachute tangled and the capsule crashed near Orenburg, killing Komarov. Soyuz 11, on June 29, 1971, ended with the deaths of Georgi Dobrovolski, Viktor Patsayev, and Vladislav Volkov due to a faulty valve causing asphyxiation. The Voskhod 2 mission in March 1965 featured the first spacewalk by Alexei Leonov, but a navigational error led to a landing in the Siberian wilderness, stranding the crew for two days. The N-1 rocket, designed for a lunar mission, exploded on July 3, 1969, during a test flight, crippling the Soviet lunar program. The Mars 96 probe, launched November 16, 1996, malfunctioned and crashed into the Pacific Ocean. The Phobos-Grunt mission in 2011 failed to exit Earth orbit and burned up in the atmosphere, blamed on poor quality control.