At Heaven’s Gate: 50 Years After Humans First Reached Space, What Frontiers Remain?

On April 12, 1961, Soviet cosmonaut Yuri Gagarin did something no human had done before. On board the Vostok 1 spacecraft, Gagarin became the first person in space after rocketing into the sky from a launch site in Kazakhstan for a nearly two-hour flight

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At Heaven’s Gate: 50 Years After Humans First Reached Space, What Frontiers Remain?