‘A giant leap’: Why a tech billionaire’s climb outside a spacecraft was so historic
By Jackie Wattles, CNN (CNN) — SpaceX’s Polaris Dawn crew is beginning its fifth day in orbit, having marked a few record-setting milestones on a historic journey — including the world’s first commercial spacewalk. Conducting a spacewalk is nothing new. NASA has been carrying out the endeavors in outer space since 1965, when the Gemini
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