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Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News


The Polaris Dawn private space mission now targeting an April ’24 launch

The Polaris Dawn private space mission, the first of a three-mission private manned program being financed by billionaire Jared Isaacman, is now targeting an April 2024 launch.

In social media posts Dec. 9, Jared Isaacman, the billionaire backing the Polaris program and who is commanding the initial mission, said the launch of Polaris Dawn is now scheduled for April 2024. “April is the goal to launch & the pace of training is accelerating,” he wrote, stating that he was at SpaceX that day for testing of extravehicular activity (EVA) spacesuits that will be used on the mission.

Conducting a spacewalk is one of the major goals of Polaris Dawn, requiring both development of an EVA suit as well as modifications to the Crew Dragon, which lacks an airlock. Both of those have been challenges, he suggested in a subsequent post. There is a “big difference,” he wrote, between the pressure suits worn by Crew Dragon astronauts and an EVA suit “engineered from the start to be exposed to vacuum outside the spaceship.” The lack of an airlock also requires changes to Crew Dragon software and hardware to enable depressurization of the cabin before the start of the spacewalk and repressurization afterwards.

The mission’s launch has been delayed several times from its first launch target in 2022. This first flight of Isaacman’s Polaris program will, as noted, attempt the first spacewalk by a private citizen. The second would also fly on a Dragon capsule, but its mission remains unclear. Both NASA and Isaacman’s Polaris team have been studying the possibility of a repair mission to Hubble. The third mission would be on Starship, once it begins flying operationally.

Isaacman previously paid for and flew on SpaceX’s first commercial manned flight, Inspiration4, in September 2021.

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2 comments

  • Ray Van Dune

    As I understand it, the Dragon lacks an airlock and thus this mission exposes the entire crew compartment to the vacuum of space. Obviously this means that the entire crew must be outfitted with EVA-capable suits!

    Given that Dragon lacks any infrastructure to support actual EVA work at present, the spacewalk would seem to evaluate only the suit, but risk the entire crew doing so! Is this wise?

  • Edward

    Ray Van Dune wrote: “As I understand it, the Dragon lacks an airlock and thus this mission exposes the entire crew compartment to the vacuum of space. Obviously this means that the entire crew must be outfitted with EVA-capable suits!

    The article suggests that the remaining crew members will be able to remain within the capsule and wear only their pressure suits. Surviving loss of pressure is what they are designed for, and since none of them will go outside, then they don’t have to wear the outdoor (outhatch) suit.

    Given that Dragon lacks any infrastructure to support actual EVA work at present, the spacewalk would seem to evaluate only the suit, but risk the entire crew doing so! Is this wise?

    The suit needs to be tested as some point. Gemini tested a spacesuit with Ed White. He didn’t have to do any work, just be outside the capsule and determine what needed improvement in the suit while his shipmate remained inside. The Soviets did the same thing, and they found at least one necessary improvement. Keep in mind that the Apollo command module pilot had to go outside to retrieve some film canisters. Also lacking an airlock. It was not too much risk for the rest of the crew.

    If the Dragon pressure suits work, how much risk are the rest of the crew taking?

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