The #SpaceX mission control outage knocked out mission headquarters, disabling the ability of operators to send commands or perform controls that would normally be standard during a spacecraft's mission. It happened sometime before the Sept. 12 #spacewalk and at least one hour passed before power was restored. Had mission control remained offline, the #astronauts had enough training to control the spacecraft themselves. https://www.reuters.com/technology/space/power-failed-spacex-mission-control-before-september-spacewalk-by-nasa-nominee-2024-12-17

"On the way down, it’s all the #HeatShield ... There’s no plan B. You know that is going to be your higher blood pressure moment" https://www.independent.co.uk/space/polaris-dawn-crew-spacewalk-return-b2615068.html

The #spacecraft is designed to repressurize with a breathable atmosphere . If anything goes wrong with repressurization, the #EVA suits would be the quartets’ lifeboats on the trip back home. “When we’re in the vacuum with 100% oxygen into the #SpaceSuits, we want to eliminate as many flammability risks as possible. We discovered there can be static electric discharge, and that could potentially lead to a flammability concern." https://www.seattletimes.com/business/boeing-aerospace/how-dangerous-is-polaris-dawn-space-walk-from-spacex-crew-dragon

They could get about three months’ worth of #radiation you would have on the #ISS during the about three orbits they’re gonna do. We’re talking about, like, seven hours or so. https://www.clickorlando.com/news/local/2024/08/23/could-be-extreme-polaris-dawn-crew-to-face-harsh-radiation-environment-in-pursuit-of-altitude-record/