With such a slim margin for error, rigorous tests must be carried out before sending a manned crew into orbit. Fears over the rockets’ safety are confirmed with the launch of the second test rocket, Kosmos 57, which receives an unauthorised radio signal from a launch station, causing the engine to fire up prematurely, and the craft to become destabilised, eventually spinning out of control and burning up.
On the 12th October 1964, Voskhod 1 is launched. Korolev wishes to test how people of different backgrounds work together in the stressful and alien conditions of space flight. Thus, two of the cosmonauts are civilians: Konstantin Feoktistov is a flight engineer who worked Vostok programme and Boris Yegorov is a physician. Together with Vladimir Komarov, they begin the first space flight containing more than one cosmonaut.
This is a highly dangerous mission, and to save mass, the crew are not equipped with ejector seats, an escape system or space suits. Fortunately, it is a success, and trio stay in space for just over an hour. During this time, Yegorov conducts tests on his fellow cosmonauts’ heart and pulse rates, muscle coordination, brainwaves and blood, in an attempt to understand the effects of space travel on human physiology. The cosmonauts are eager to stay in orbit, and though Korolev is tempted to allow them to continue their mission, eventually they are called down to Earth, where they land safely.
The final Voskhod mission is launched in March 1965 with the aim of performing humanity’s first spacewalk – where a cosmonaut would exit his craft and float in the vacuum of space. Two men, Alexei Leonov and Pavel Belyayev, join the mission. After 90 minutes, Leonov enters the craft’s inflatable airlock and begins the spacewalk. Later, he would describe the magical feeling of floating in space where he ‘felt like a seagull with its wings outstretched, soaring high above the world’.
In keeping with Soviet secrecy, no one, not even the cosmonauts’ immediate family, knew about the spacewalk ahead of time. Leonov, in an article he wrote decades later, remembers his wife telling him of his father’s furious reaction to the stunt as he watched it live back on Earth.
“Why is he acting like a juvenile delinquent?” he shouted at the TV, “everyone else can complete their mission properly, inside the spacecraft. What is he doing clambering about outside? Somebody must tell him to get back inside immediately. He must be punished for this.”
Mr. Leonov is right to be worried. As his son finished his 12-minute spacewalk, he realises that, as there is no atmospheric pressure, the oxygen in his spacesuit has caused it to stiffen, making it impossible to re-enter the airlock. With just a few minutes of life support remaining, Leonov must think quickly. He realises that the only way to re-enter is to gradually let oxygen out of his spacesuit, making it looser and more pliable. Leonov painstakingly lets oxygen out of its valve, saving himself by jettisoning the very thing keeping him alive. Luckily, it works, and little by little, he squeezes himself back into the airlock. Then, like a contortionist, he must curl himself into a ball, spin around (an almost impossible manoeuvre in such a tight space) and seal its doors shut.
The craft itself barely makes it back to Earth. The cosmonauts miss their intended landing site by over 200 miles (321 km), touching down in the middle of a forest in the Ural Mountains. Leonov suffers from a severe heatstroke, but is alive. The pair sit underneath the towering Siberian pines waiting to be picked up by their comrades.
The live transmission was cut by the Soviet authorities as soon as it looked like Leonov was in difficulty, and none would know of the cosmonaut’s near-death experience until years later. What was known as Leonov and Belyayev arrived safely back in Moscow, however, was that a human being could survive in space without suffering hallucinations, exhaustion or losing consciousness. This is a discovery with wide-ranging implications, and the Voskhod flights proved invaluable for mankind’s understanding of the science and practicalities of space travel, proving that longer-term space travel, such as that needed to travel to the Moon, was possible.