The Polaris Dawn mission—a partnership between SpaceX and billionaire Jared Isaacman—will soar to historic heights and attempt the first-ever commercial spacewalk
mission—a partnership between SpaceX and billionaire Jared Isaacman—will soar to historic heights and attempt the first-ever commercial spacewalk) Anna Menon, Scott Poteet, Jared Isaacman and Sarah Gillis pose in front of rocket stages at SpaceX’s Starbase Complex in Boca Chica.mission is set to launch into an ultrahigh orbit—and into history books—from NASA’s Kennedy Space Center.
“I can tell you, without a doubt, this has been some of the most challenging training that I’ve ever experienced,” Poteet said during the briefing. “It’s been an awesome journey preparing for this mission, and it also took ... an entire organization—14,000 employees—and some of the brightest and smartest engineers I’ve ever met have been a part of this.”
Because Dragon has no airlock, performing day three’s spacewalk will require the crew to don SpaceX’s new spacesuits, which include an oxygen-supplying umbilical—and then to purge all the air from the cabin for the EVA’s duration. The prebreathe protocol will purge nitrogen from the astronauts’ bodies, too. Otherwise, when the cabin transitions to hard vacuum, excess nitrogen could bubble up in their blood—giving them debilitating and dangerous decompression sickness.
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