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Pinboard

@Pinboard

Do not attempt to compete with Pinboard. http://pinboard.in  maciej@ceglowski.com +1 415 610 0231

Boulevard of broken dreams
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    1. Pinboard‏ @Pinboard Oct 17

      Space nerds, has SpaceX talked publicly at all about the en-route obstacles to a Mars mission (radiation, deconditioning, closed-loop life support) and how it plans to address them? I can find stuff about launch and landing but not the middle part that is the actual dealbreaker.

      13 replies 6 retweets 75 likes
      Show this thread
    2. Pinboard‏ @Pinboard Oct 17

      The big gating problems in space flight to Mars are almost tailor-made to stimulate Elon Musk's boredom centers—bone loss, kidney stones, degenerating eyesight, figuring out how to reliably grow a salad. The exact kind of old man problems he doesn't want to think about on Earth.

      8 replies 18 retweets 106 likes
      Show this thread
    3. Patric Mueller‏ @dingir_bhaak Oct 17
      Replying to @Pinboard

      To be realistic, most if not all of the first colonizers of Mars are going there to die. Unless the life expectancy is reduced significantly it‘s probably low priority. Also Musk‘s problem solving strategy is to solve them when they need to be solved. Not sooner.

      2 replies 0 retweets 1 like
    4. Pinboard‏ @Pinboard Oct 17
      Replying to @dingir_bhaak

      I'm not talking about colonizers, but about astronauts and basic mission risks like "can you stand up after landing without breaking a hip"

      4 replies 0 retweets 2 likes
    5. Robotbeat 🗽 ➐‏ @Robotbeat Oct 17
      Replying to @Pinboard @dingir_bhaak

      I’m sure you’ll ignore this, but: For a transit time of 3-4 months, that’s a solved problem. The Russians had a >400 day mission and the dude who did it walked after landing on Earth. That’s 3 times the gravity of Mars and 4 times the duration of Mars transit on Starship.

      2 replies 1 retweet 5 likes
      Pinboard‏ @Pinboard Oct 18
      Replying to @Robotbeat @dingir_bhaak

      Cosmic ray radiation levels in low earth orbit are 2-4x lower than in a Mars transit, and a Mars transit would take six months, not 3-4.

      9:37 AM - 18 Oct 2021
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Robotbeat 🗽 ➐‏ @Robotbeat Oct 18
          Replying to @Pinboard @dingir_bhaak

          Wrong. The trip time is a function of the rocket architecture, you know the part you think is just the fun part that isn’t the REAL issue. ;) SpaceX’s ITS/BFR/Starship would take as few as 80 days to transit, depending on the year. https://www.spacex.com/media/making_life_multiplanetary_2016.pdf …pic.twitter.com/oiAIp3EIus

          1 reply 1 retweet 8 likes
        3. Pinboard‏ @Pinboard Oct 18
          Replying to @Robotbeat @dingir_bhaak

          I go by the NASA design reference architecture because Musk has a very long history of making shit up.

          1 reply 0 retweets 0 likes
        4. Show replies

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