@fakecarlsagan @DJSnM True, it'll get to LEO that way. But Orion is incredibly expensive for LEO-only missions. And non-reusable, except for interior components.
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Space In My Brain
12.8K posts
Space In My Brain
@SpaceInMiBrain
Avocation 1, paramedic. Avocation 2, Darwin semi-scholar. Lifelong interest - rockets and space exploration. New interest - the new crewed space exploration.
NYC Bergabung Ağustos 2021
75 Mengikuti872 Pengikut
@SpaceInMiBrain @DJSnM ESM can be under-fueled for LEO missions.
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With Orion being set for a Centaur V upper stage NASA could start launching it into LEO on Vulcan.
Then there would be no need for Starliner, for LEO crew redundancy.
And if a ferry stage were implemented to take it to the moon then SLS isn’t needed for Artemis.
Boeing would not be happy.
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It's designed to take the thrust of 6. Even if they fit, adding two would require considerable redesign work.
However, I'm starting to think using Vulcan/C-V has been the unstated plan, starting with using it on SLS. Isaacman said he wanted to use a standardized upper stage for both Artemis on SLS and on an unnamed commercial successor at some point after Artemis V. Then he springs the Orion ride-along on Starship. Then he says oh wait, since Orion now only needs a lift to LEO we have a commercial rocket currently that can use the standardized upper stage.
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@SpaceInMiBrain @DJSnM Vulcan with 8 SRBs looks viable geometrically
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@Marc_Topaz @DJSnM I think NASA declaring Starliner unfit for purpose is the more likely outcome. NASA can cancel the contract for non-performance , for failure to meet the requirement, failure to deliver the crew-rated spacecraft contracted for.
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@SpaceInMiBrain @DJSnM Yeah, as much as Starliner is a joke, this is still true. And Boeing still has a contract with NASA with three flight options authorized. Unless NASA can (and will) prove Starliner unfit for purpose. the cancellation fees on that contract won't be trivial.
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@rookisaacman @JoeTegtmeyer This is more wonderful than I can put into words. I loved the Inspiration4 mission and this is a fitting companion piece.
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@JoeTegtmeyer I love Space Camp and the U.S Space and Rocket Center .
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There is a new addition to the US Space & Rocket Center Space Camp under construction and it is the Inspiration 4 Training Center!
Initial funding in 2022 of $10 Million by @rookisaacman Jared Isaacman to initiate construction & at the time, it was the largest single donation in the history of the U.S. Space & Rocket Center!
Expansion Funding of ~$15 Million in July 2025 was subsequently given by Jared and is designated for:
Mission Operations: Supporting advanced simulations for Space Camp, Robotics, and Cyber Camp
A new Dormitory: Providing seed money for a fourth dormitory to house students attending the programs.
Really great to see funding of facilities and programs like this to inspire a new generation of space explorers! @Ellieinspace
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@Rainmaker1973 a) Remove container.
b) Move to back yard.
c) Drive your golden retriever wild with joy.
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@JasonKPargin The phrase "unknown unknowns" has been adopted in a number of fields, I see it fairly often.
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At the time people mocked that Rumsfeld quote as word salad but, despite the source, it makes perfect sense and in fact would be extremely helpful for most people and institutions to internalize.
Most don't acknowledge the existence of unknown unknowns!
Fin Moorhouse@finmoorhouse
Thinking about the time our high school English teacher gave us a poem to analyse When we finished she told us it was Donald Rumsfeld’s WMD press conference, and that was the class
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@DJSnM Scott, I have to be honest. I know you're working full time as a YT/internet person now but you've started tweeting random details of your life like a 20-something social influencer. Flight delays are part of the background noise of life. (Long time Patreon.)
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Ground stop at Houston is also causing problems for me in Austin
ABC13 Houston@abc13houston
IAH seeing extended wait times, plus ground stop Monday as Spring Break travel ramps up abc13.com/post/texas-tra…
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@SpaceInMiBrain Um, I think you replied to the wrong person?
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The Progress MS-31 cargo ship fired its engines to deorbit at 1642 UTC Mar 16 and reentered over the S Pacific at around 1721 UTC
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@surelyagerbil @CJHandmer @pmarca @grok Grok got it right about Darwin regretting losing his love of poetry as he grew older but the basic statement is wrong, he didn't attribute it to his work. A classic AI mistake.
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@CJHandmer @pmarca @grok Ok grok, you can do this but... Please don't go into too many details about his poe... Crap, nvm...
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It is 100% true that great men and women of the past were not sitting around moaning about their feelings. I regret nothing.
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@pmarca "That's the truth because I decided it is." Spoken like a true modern right-winger, with 100% certainty. You've studied up on all the great men and women of the past, have you.
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@StationCDRKelly @zanehkoch You and worms and radiation together gaining powers greater than ordinary mortals.
Hmm... are there any worm-like powers worth having? Too bad there weren't spiders on the ISS. :D
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When I was on the ISS for my nearly year long mission, there was a telomere experiment comparing my telomeres to my earth baseline and my twin brother as a control. Hypothesis was they would get damaged and worse due to the environment. Turns out they got better. Initially NASA thought maybe it was due to exercise and diet. After I returned we learned JAXA had a telomere experiment on some small worms the same time I was there. Their telomeres got better too. Never saw the worms doing any exercise. After further study determined it was the radiation.
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for a while i've had a slight fear that the bluetooth from my airpods could be frying my brain
this weekend i pulled the raw data from a $30m government study of 1,679 mice blasted with cell phone radiation and reanalyzed it
what i found was...not what I expected?
🧵
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@piercepenniless "That is so wrong it isn't even incorrect."
This quote is very apt for the statement about introspection in this video.
It's by Wolfgang Pauli, a famous physicist.
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Among the amazingly, amazingly stupid claims made here is the idea that nobody in the early 17th century was introspective, an idea so stupid it barely qualifies as an idea.
David Senra@davidsenra
Great men of history had little to no introspection. The personality that builds empires is not the same personality that sits around quietly questioning itself. @pmarca and I discuss what we both noticed but no one talks about: David: You don't have any levels of introspection? Marc: Yes, zero. As little as possible. David: Why? Marc: Move forward. Go! I found people who dwell in the past get stuck in the past. It's a real problem and it's a problem at work and it's a problem at home. David: So I've read 400 biographies of history’s greatest entrepreneurs and someone asked me what the most surprising thing I’ve learned from this was [and I answered] they have little or zero introspection. Sam Walton didn't wake up thinking about his internal self. He just woke up and was like: I like building Walmart. I'm going to keep building Walmart. I'm going to make more Walmarts. And he just kept doing it over and over again. Marc: If you go back 400 years ago it never would've occurred to anybody to be introspective. All of the modern conceptions around introspection and therapy, and all the things that kind of result from that are, a kind of a manufacture of the 1910s, 1920s. Great men of history didn't sit around doing this stuff. The individual runs and does all these things and builds things and builds empires and builds companies and builds technology. And then this kind of this kind of guilt based whammy kind of showed up from Europe. A lot of it from Vienna in 1910, 1920s, Freud and all that entire movement. And kind of turned all that inward and basically said, okay, now we need to basically second guess the individual. We need to criticize the individual. The individual needs to self criticize. The individual needs to feel guilt, needs to look backwards, needs to dwell in the past. It never resonated with me.
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Great Men are those who have the biggest impact on the worldview of their societies and the society of all humankind. Newton and Darwin had the most impact of any scientist in history. Copernicus also, to a limited extent.
Their work broke the hold of religion as the sole source of a worldview. (Newton actually was a Christian but in his own idiosyncratic way.) It is difficult to explain how huge an impact that is. It transcended science and permeated all levels of society.
Charles Darwin knew very well the impact his theory would have on society. It was a large part of why he spent almost 20 years honing his argument and researching everything he could to back it up before publishing.
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@paulg @davidsenra @pmarca There are Great Men and Great Scholars
Great Scholars are the introspective types, Great Men are the more active types
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Great men of history had little to no introspection.
The personality that builds empires is not the same personality that sits around quietly questioning itself.
@pmarca and I discuss what we both noticed but no one talks about:
David: You don't have any levels of introspection?
Marc: Yes, zero. As little as possible.
David: Why?
Marc: Move forward. Go!
I found people who dwell in the past get stuck in the past. It's a real problem and it's a problem at work and it's a problem at home.
David: So I've read 400 biographies of history’s greatest entrepreneurs and someone asked me what the most surprising thing I’ve learned from this was [and I answered] they have little or zero introspection.
Sam Walton didn't wake up thinking about his internal self.
He just woke up and was like:
I like building Walmart. I'm going to keep building Walmart. I'm going to make more Walmarts. And he just kept doing it over and over again.
Marc: If you go back 400 years ago it never would've occurred to anybody to be introspective.
All of the modern conceptions around introspection and therapy, and all the things that kind of result from that are, a kind of a manufacture of the 1910s, 1920s.
Great men of history didn't sit around doing this stuff.
The individual runs and does all these things and builds things and builds empires and builds companies and builds technology.
And then this kind of this kind of guilt based whammy kind of showed up from Europe. A lot of it from Vienna in 1910, 1920s, Freud and all that entire movement. And kind of turned all that inward and basically said, okay, now we need to basically second guess the individual.
We need to criticize the individual.
The individual needs to self criticize.
The individual needs to feel guilt, needs to look backwards, needs to dwell in the past.
It never resonated with me.
David Senra@davidsenra
My conversation with Marc Andreessen (@pmarca), co-founder of @a16z and Netscape. 0:00 Caffeine Heart Scare 0:56 Zero Introspection Mindset 3:24 Psychedelics and Founders 4:54 Motivation Beyond Happiness 7:18 Tech as Progress Engine 10:27 Founders Versus Managers 20:01 HP Intel Founder Legacy 21:32 Why Start the Firm 24:14 Venture Barbell Theory 28:57 JP Morgan Boutique Banking 30:02 Religion Split Wall Street 30:41 Barbell of Banking 31:42 Allen & Company Model 33:16 Planning the VC Firm 33:45 CAA Playbook Lessons 36:49 First Principles vs. Status Quo 39:03 Scaling Venture Capital 40:37 Private Equity and Mad Men 42:52 Valley Shifts to Full Stack 45:59 Meeting Jim Clark 48:53 Founder vs. Manager at SGI 54:20 Recruiting Dinner Story 56:58 Starting the Next Company 57:57 Nintendo Online Gamble 58:33 Building Mosaic Browser 59:45 NSFnet Commercial Ban 1:01:28 Eternal September Shift 1:03:11 Spam and Web Controversy 1:04:49 Mosaic Tech Support Flood 1:07:49 Netscape Business Model 1:09:05 Early Internet Skepticism 1:11:15 Moral Panic Pattern 1:13:08 Bicycle Face Story 1:14:48 Music Panic Examples 1:18:12 Lessons from Jim Clark 1:19:36 Clark Versus Barksdale 1:21:22 Tesla Versus Edison 1:23:00 Edison Digression Setup 1:23:13 AI Forecasting Myths 1:23:43 Edison Phonograph Lesson 1:25:11 Netscape Two Jims 1:29:11 Bottling Innovation 1:31:44 Elon Management Code 1:32:24 IBM Big Gray Cloud 1:37:12 Engineer First Truth 1:38:28 Bottlenecks and Speed 1:42:46 Milli Elon Metric 1:47:20 Starlink Side Project 1:49:10 Closing Includes paid partnerships.
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In that he gave a theory of a model for change within species with a falsification - irreducible complexity - which has now been found many thousands of times - falsifying his magnum opus?
Why are we still talking about Darwin except in lists of natural philosophers who got it wrong?
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@NASAhistory Irrelevant but: Those helmets are so iconic, so cool. It certainly helped that they were used on the Gemini flights back when every launch was a news event and real high risk situations could and did occur.
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Triumph turns to near disaster 60 years ago this morning
At 11:41 am March 16, 1966, rookie astronauts Neil Armstrong and David Scott launched aboard Gemini VIII. Within 6 hours, they had accomplished the first ever docking of two spacecraft in orbit. It was a milestone that the Apollo program depended on. Without proving that two vehicles could safely link up in space, there would be no Moon landing.
But 27 minutes after docking, their spacecraft began to spin uncontrollably. Armstrong and Scott found themselves in danger of losing consciousness as they spun at around 1 revolution per second. Armstrong, cool-headed under extreme duress, was able to disable the misfiring thruster and stabilize the spacecraft, saving their lives.
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Idk if there was a book or two or some newspaper articles but in the early 1900s a problem was brewing that would doom much of the population to starvation. The world's easily "mined" nitrate deposits for fertilizer were beginning to run out. Those consisted of enormously thick layers of bird shit that had accumulated over millennia.
Then the Haber-Bosch process to produce nitrates from nitrogen in the atmosphere was developed. By 1920 it was a large and growing industry. Population growth was unchecked - except for disease. The medical field kept progressing, dammit.
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paul ehrlich predicted hundreds of millions would starve in the 1970s, that england would cease to exist by 2000, that the battle to feed humanity was already lost and advocated spiking water supplies with sterilants to prevent the population bomb
he wasn’t even close.
the green revolution fed billions, famines collapsed, birth rates declined entirely on their own.
every single major prediction in the population bomb was wrong, and the institutions that built 60 years of environmental policy on his thesis never updated the model
he died in a world where south korea hit a 0.72 fertility rate, japan is shutting down schools faster than it can demolish them, every developed nation is spending billions begging its citizens to have kids, and somehow the new york times called his predictions “premature” as if the mass starvation is still coming some time in the future (it’s not)
the most influential environmental thinker of the 20th century spent his entire career being wrong about the one thing he was famous for, and the policies his work inspired (population control programs, anti-natalist funding, development restrictions) actively accelerated the real crisis of a world that cant replace its own population
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@Blaze_R935 @CSI_Starbase Not that short for a static fire. I've seen shorter ones for Starship, just a second or two to make sure the startup sequence works. "Full duration" static fires are pretty rare.
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@CSI_Starbase Do you think this was intentionally short or did they abort?
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Booster 19 has performed its first static fire test on the new Launch Mount!
Its difficult to determine how may engines were tested, but it appears to be at least 3. Plume exiting both sides of the trench means there is one on each side, and stronger plume on the east side suggest double the amount of engines on that side tested.
🎥: @NASASpaceflight
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