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Russia has historically been a trailblazer when it comes to space exploration. It was the first to put a human into space in 1961 with Yuri Gagarin. It led the way for the first spacewalk and had the ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. We live in an extraordinary period of exploration. Over the last few decades, humanity ...