When it comes to space exploration, it had always been a race between the USA and the Soviet Union. While Neil Armstrong is probably the most popular American astronaut, the Soviet Union had Yuri Gargarin as the first human being that went into orbit.
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Despite the many accomplishments we now have when it comes to space exploration, rumor has it that the beginning of it all was a very dark time. In fact, there was one astronaut that had suffered a devastating fate and everyone had covered it up.