Blue Origin's New Glenn blows up during static fire test
13 hours ago (twitter.com)
https://twitter.com/nasaspaceflight/status/20601649284728548...
https://xcancel.com/nasaspaceflight/status/20601649284728548...
https://twitter.com/SawyerMerritt/status/2060174287563116696...
https://xcancel.com/SawyerMerritt/status/2060174287563116696...
https://arstechnica.com/space/2026/05/blue-origins-new-glenn...
This is a crushing setback for Blue Origin.
I feel for the engineers. They have been the underdogs for so long, but with the recent successful recovery of the New Glenn booster, it finally seemed like they had some bragging rights. Now they're looking at a year minimum before they get back to a regular launch rhythm.
The question now is: What went wrong? If they're lucky, it's just a stupid mistake. Maybe an incorrect procedure while loading fuel, or maybe a manufacturing error got past QC.
If they are unlucky, the cause will be a mystery, and it will take them months to nail down the root cause.
Early in Falcon 9's history, the Amos 6 satellite was stacked on the rocket during a routine static fire and the whole thing blew up. It happened so fast that there were only a few bits of telemetry between "everything normal" and "no signal". For a brief moment SpaceX suspected sabotage by rival ULA. They even requested access to a ULA building to see if a sniper could have taken a shot at the rocket.
It turned out to be an exotic failure: liquid oxygen had gotten caught inside a buckled liner in the carbon composite pressure vessels. Friction ignited it, and the entire second stage blew up, destroying the rocket.
I worked at SpaceX at the time, and I cannot speak for the company, but I can tell you that approximately nobody inside SpaceX took the idea of a sniper seriously. There was a lot of internet talk about it, and it was one of hundreds of avenues that were explored, and ruled out basically as soon as it was explored.
The very interesting part of the liquid oxygen failure (and this was published in the investigative findings) was that the liquid oxygen that became trapped in the fibers was actually cooled and compressed into solid oxygen - you can read some details here: https://www.americaspace.com/2017/01/02/spacex-closes-amos-6...
No one inside SpaceX, except for Elon Musk himself? https://arstechnica.com/space/2025/05/spacex-pushed-sniper-t...
> They even requested access to a ULA building to see if a sniper could have taken a shot at the rocket.
> It turned out to be an exotic failure: liquid oxygen had gotten caught inside a buckled liner
I gotta say, suspecting "Rival company hired a sniper" before "Dealing with liquid oxygen is very fucking hard and incredibly flammable" feels very Elon
You're assuming "before" when it's probably "investigate 100 possible causes in parallel".
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Relevant WKUK sketch: https://www.youtube.com/watch?v=mpC_hO15IoA
We hear about how dealing with liquid oxygen is hard. I don't know that we hear about industrial sabotage.
It reminds me of my younger self when I encountered inexplicable behavior in my own software, “I think I found a bug in Firefox!” … “Oh, nope. I forgot to add an event handler.”
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>feels very Elon
why
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The real concern was Russia, given SpaceX has always been a MIC project, now publicly manifest as "Golden Dome" .. a program which undermines M.A.D. and obviously greatly incentives sabotage. There just happened to be a ULA building nearby that was in range and investigated as a possible vector of attack.
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Crushing only because their cadence is so slow compared to SpaceX. Their process seems much closer to the highly risk averse methodology of traditional incumbents than to SpaceX's style. Failure becomes a self-fulfilling prophecy.
Rockets are ridiculously complex. Slow-and-steady wins the race makes sense for many individual components, depending on how well understood the problem domain is, and your ability to rigorously model things. But if you take that approach when testing all the thousands of components together, which is simply just too complex to exhaustively model[1], you'll never get anywhere. You have to be prepared to not only break some eggs in epic fashion, but to break many as quickly as you can, so you can parallelize your problem solving and iterate faster.
[1] At least without a large multiple in time and monetary expenditure that ends up costing more than even the US (government and private capital combined) is prepared to spend.
> if you take that approach when testing all the thousands of components together, which is simply just too complex to exhaustively model[1], you'll never get anywhere.
This is exactly why ideas like test-driven development don't work well as a general approach.
Most realistic systems exhibit non-linear interactions where correctness is not compositional. Local correctness does not compose upward in any meaningful sense. Top-down design (working backward from the customer) allows for you to perform what is effectively one big global search. Bottom-up design (TDD) requires many local searches that all have to fit together perfectly at the very end. With units & composition, the consequences of component A's interactions with component B may not be considered until nearly the end of the project. If you are testing an integrated vertical, you will discover these interactions much earlier.
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No, this would be crushing regardless. Even if Blue Origin had dozens of rockets ready to go, they can't fly without without the pad, which will take around a year to repair (based on previous examples).
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Risk aversion is very risky.
Failure is not only an option, but is required. The more smaller failures you have, the more big successes you can have.
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> Crushing only because their cadence is so slow compared to SpaceX. Their process seems much closer to the highly risk averse methodology of traditional incumbents than to SpaceX's style. Failure becomes a self-fulfilling prophecy.
This is a silly perspective. Some reports suggest SpaceX's 1-year budget is around 20 times the yearly budget of Blue Origin. Of course SpaceX can afford to blow up rocket after rocket. The radical difference is not methodologies, but how much cash is being thrown at the project.
For perspective, apparently the whole lunar lander program ran on a 1-year budget much similar to SpaceX's, and thus 20 times larger than Blue Origin's. Where they also highly risk- averse?
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"United Launch Alliance (ULA) is an American launch service provider formed in December 2006 as a joint venture between Lockheed Martin Space and Boeing Defense, Space & Security."
for those who wondered like me!
I'm not sure if I would call the vanity project of one of the richest people on earth an "underdog".
Btw, "If they're lucky, it's just a stupid mistake" is actually interesting.
If you're at that stage and spending so much money, I would consider making stupid mistakes to be catastrophic.
Always hope for the stupid mistake. It’s embarrassing but so much better than having the same problem caused by a complex and difficult-to-root-cause issue.
After a long day of working on a car I would much rather have it fail to start because I forgot to connect the battery than fail to start because the starter I replaced had been returned to the store by a previous purchaser, with the wrong part in the box, which was mechanically compatible with the mount but not with the flywheel. (Hypothetically speaking…)
BO was founded in 2000 and has about 2 orbital launches with a partly reusable system. They build rockets.
SpaceX was founded in 2002 and has around 660 orbital launches with a fully reusable system. They build rocket factories.
BO is absolutely the underdog, in every way, unless you want to count 38 suborbital joyrides, then they're ahead at 38 to 0.
Sort of - if it's determined that somebody bypassed a safety control they can just make the control firmer and fire that person and move onto other things. If it's some fundamental flaw in the engine design that could set them back months/years.
How does one even go about finding a root cause so exotic?
I'd bet lots of telemetry, comprehensive design and change documentation, along with engineers tacit knowledge.
Something like:
telemetry shows dramatic drop of temperature on this, that given the location of the sensor could only be caused by a specific LOX line leak, and vibration sensors show data compatible with friction as the ignition event and not a short circuit because the relevant telemetry doesn't show any electrical abnormality, so, by exclusion, given no other anomalies, give that computer simulations show it is a feasible scenario, followed by lab work with a physical model, this must be the cause of the accident.
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Imagine is a good word to use. Before offering a solution, understand the problem first - is "debugging speed" a problem that needs solving, in this case?
Are there enough open source aero engineering projects to give the current ai approaches a remotely plausible amount of training data?
Much more likely is that it would hallucinate a plausible sounding but incorrect answer and send intermediate and junior engineers on a wild goose chase
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The video angle published by the BBC is better, it appears to show one side of the rocket disintegrating and sliding down non-explosively before the large explosion really kicked in. Would hate for this all to be described by a few missing bolts
https://www.bbc.co.uk/news/videos/cvgz0pdg32mo
edit: the failure appears to start at the bottom, this seems to have damaged the structure enough to cause the sliding to start, then the huge fireball seems to begin with a small flash closer to the top of the rocket
Ouch, losing the rocket is unfortunate, but the damage to the launch infrastructure is going to easily mean over a year of repairs. I hope they're going to take this as an opportunity to update the infrastructure from lessons learned from the flights so far, and to be able to support some of their future ambitions (e.g. Jarvis).
It's an understandable but wrong attitude. If you don't have high profile failures like this, you aren't taking enough R&D risk. It's a fiercely ambitious industry and these launch attempts amount to what literally are moon shots. The race is on between various companies and countries as to who gets there first.
Boeing is pretty much out of the race at this point. Just too busy navel gazing and lobbying. There's a big risk that the next person on the moon might be from China. Blue Origin and SpaceX are the best things to happen to the rocket industry in decades. So, yes Blue Origin had a RUD with New Glenn. They should, learn and adapt and launch the next one. It would be good for SpaceX to have credible competition. And New Glenn seems like it could become that.
But if they only get their lessons every few years, they'll be competing against a fully reusable Starship rather than Falcon 9 & Falcon heavy by the time this thing becomes a serious launch vehicle. The goal posts are moving.
High profile failures that take out launch infrastructure are undesirable because the cost to that is much much higher than just losing the rocket. It means having all of your R&D and production pipelines stalled for at least months, usually years, while the rest of that fiercely ambitious industry races ahead.
This was routine pre-launch testing, not a launch attempt.
Forgive my ignorance, but why would China being the next on the moon be such a bad thing? Aren't moon missions mostly just "look what I can do!" sorts of things?
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Is there any reason to doubt that the Chinese will get (back) there first?
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Boeing issue was that they in fact took the risks so that they move faster and cheaper.
> There's a big risk that the next person on the moon might be from China.
China seems to be focused more on pragmatic things and less on super expensive vanity projects.
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What were the high profile failures in the Apollo program that proves your point?
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Eric Berger of Ars Technica:
> I'm hearing that it is possible that Blue Origin decides to go directly to the larger 9x4 variant of New Glenn after this failure. Obviously no decisions like that will be made without more data review.
https://xcancel.com/SciGuySpace/status/2060190522539401631#m
This is their only New Glenn launch pad, but the pad for the 9x4 is already under construction. Depending on the damage sustained to the pad that might be a factor in the decision
https://x.com/sawyermerritt/status/2060174287563116696?s=46&...
I know it's not, but darned if that doesn't sound like "it exploded real big, so build a bigger one!"
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That is a very fair point. While I have no skin in the game, it is fascinating to see if the Us with Artemus or China with Chang'e will be the first to make it back to the Moon manned.
At this point is is looking like the winners will merely be those that have the least loses and launch pad loses can take a long time to recover from.
Credit to Space X, they have become very good and fixing launch pads with Starship. What used to be year(s) long pauses, now only take a few months.
> the winners will merely be those
The best outcome is we get two Moon bases. I say this as someone who remains a fairly patriotic American. But we need competition and, more darkly, we need a backup.
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Yes, in that sense SpaceX has really benefited from having the Starbase site. My understanding is that one of the reasons pad rebuilds take so long at the Cape is that they have to work around everyone else's schedule.
I think that if companies want to scale up rocket launches (and let's disregard the cost / environmental impact / etc for now), they also need to scale up launch sites, at the moment they seem like single points of failure.
I have only armchair amateur half a world away knowledge of this, but I want to believe all they need is an exhaust diffuser thingy and refueling capabilities; the former can probably be built cheap enough anywhere, the latter can be made portable.
(of course then you also have the challenge of assembling and loading a rocket, lmao. But a hub-and-spokes setup with VAB(s) and launch sites spread out around it like an airport could work. Bonus evil villain points if the launch sites are underground to contain explosions in case of failure.
(this post is just imagination / castles in the sky)
I would guess this puts a big dent in NASA's moon plans. I think Blue origin was _just_ selected to be the first moon lander mission. Now they are going to be grounded _again_. They just got off grounded status last week! And this is not even going to mention the significant ground equipment damage they have to deal with.
Very unfortunate all around. I hope BO finds a way to keep the timelines.
> Blue origin was _just_ selected to be the first moon lander mission
Just a rover [1].
Blue Moon is one of the two lander contractors. But pretty much everyone thinks Artemis is Starship HLS or bust.
Does Blue Origin not have another pad? (Did they blow up a pad or a test stand?)
[1] https://www.nasa.gov/news-release/nasa-selects-blue-origin-t...
>Blue Moon is one of the two lander contractors. But pretty much everyone thinks Artemis is Starship HLS or bust.
That isn't my impression of NASA/government opinion. Starship HLS is seen as the eventual option, as is obvious from the testing campaign. It'll get there eventually and offer unprecedented capability, but it's very clearly several years out.
Blue's option was being seen as the faster option due to having a less risky critical path. The rocket was already orbital, fewer refueling flights were needed, the engines weren't pushing the limits of materials technology, no reusable heat shield to worry about.
Though, ultimately it's worth keeping in mind that the landers aren't actually the current bottleneck in the program. The space suits are in total development hell.
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> But pretty much everyone thinks Artemis is Starship HLS or bust.
Right now it seems like it's Axiom or bust, with their suits. The suits have missed a lot of milestones, and there's not much point in going to the Moon without suits. Latest NASA OIG report put them somewhere in the 2030s at best...
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> Does Blue Origin not have another pad? (Did they blow up a pad or a test stand?)
The explosion happened at their only completed pad.
They reportedly have a second pad under construction (for the larger "9x4" variant of New Glenn) but I've not seen a lot of detail about how far along it is.
Would not be surprised to see them accelerating construction of the new pad.
Blue Origin's lunar architecture is designed for a maximum of twelve moon landings per year for the Blue Moon Mk2 without using Orion and the same $4 billion budget per Orion+SLS flight.
SpaceX's architecture requires a second cislunar starship for the return trip. That will mean at most four moon landings per year and even that is optimistic. The large size of Starship makes return trips and lunar refueling really unattractive. If SpaceX wants to compete they will need to build a dedicated cislunar vehicle.
They blew up LC-36.
I might have seen the explosion light up some clouds in Orlando. I was driving East when I saw a patch of clouds glow orange for a few seconds and then go dark. I wondered what that was... then found out this happened at the same time I was driving!
On the upside (or maybe that's tightly bolted down side), at least the rocket stayed static, unlike this one in China:
https://youtu.be/IlQkeKa4IKg?si=nu-0D73-7hNg6jW3
Or the Long March destroying an entire rural village which was covered up by the CCP.
That rocket appears to have crashed into an open plain. It was a village?
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I think my mom could have taken better footage of that, and I swear she was the worst. I realize that the person holding the camera was looking at the thing directly and getting lost in the moment rather than looking at the camera, but for someone whose job it's been to operate a camera that is incredibly irritating to watch. It's right up there with the Artemis II launch (okay that's a bit harsh, but they were meant to be "pros")
Does anyone else find it surprising that rockets are a century old[1] and yet still seem to fail spectacularly with amazing regularity, often due to some small flaw? Is it just that they're still relatively niche machines and thus haven't benefited from mass manufacturing improvements?
[1] https://en.wikipedia.org/wiki/File:Goddard_and_Rocket.jpg
https://web.archive.org/web/20120503175355/https://www.nasa....
> The percent propellant has huge implications on the ease of fabrication and robustness in achieving the engineering design (and cost). If a vehicle is less than 10% propellant, it is typically made from billets of steel. Changes to its structure are readily done without engineering analysis; you simple weld on another hunk of steel to reinforce the frame according to what your intuition might say. I can easily overload my ¾ ton pickup by a factor of two. It might be moving slowly but it is hauling the load.
> Once the vehicles become airborne, the engineering becomes more serious. Light weight structures made of aluminum, magnesium, titanium, epoxy-graphite composites are the norm. To alter the structure takes significant engineering; one does not simply weld on another chunk to your airframe if you want to live (or drill a hole through some convenient section). These vehicles cannot operate far from their designed limits; overloading an airplane by a factor of two results in disaster. Even though these vehicles are 30 to 40% propellant (60 to 70% structure and payload), there is room for engineering to comfortably operate thus there is a robust, safe, and cost effective aviation industry.
> Rockets at 85% propellant and 15% structure and payload are on the extreme edge of our engineering ability to even fabricate (and to pay for!). They require constant engineering to keep flying. The seemingly smallest modifications require monumental analysis and testing of prototypes in vacuum chambers, shaker tables, and sometimes test launches in desert regions. Typical margins in structural design are 40%. Often, testing and analysis are only taken to 10% above the designed limit. For a Space Shuttle launch, 3 g’s are the designed limit of acceleration. The stack has been certified (meaning tested to the point that we know it will keep working) to 3.3 g’s. This operation has a 10% envelope for error. Imagine driving your car at 60 mph and then drifting to 66 mph, only to have your car self-destruct. This is life riding rockets, compliments of the rocket equation.
Interesting post. I'd never thought of it that way. Not consciously anyway.
Might that make an air-launched system more reliable? Even if it's less efficient, the TCO would be lower using a winged system for the initial phases of launch.
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Nice and to the point.
Thanks for the link.
To add to this excellent explanation: Rockets have a fundamental problem. They need to go absurdly fast. If you have a rocket that can reach speed X, to go faster than X you need to reach X but also have fuel left over. However to get that fuel to speed X, you need even more fuel. This is the tyranny of the rocket equation.
Roughly put, the rocket equation is: change in speed = (engine efficiency) * log(mass of the rocket with fuel / mass of the rocket without fuel). So there's limited parameters to play with:
- The speed you need to reach is fixed.
- You can change the weight of the payload. Payload (eg, satellite) designers try to make things as light as possible, rocket designers try to give as much capacity as possible, and everyone prays they can meet in the middle.
- You want as little propellant as possible for cost and practicality, but mostly the other parameters fix how much you need. If the other parameters aren't good enough, you can easily get results like needing a rocket the size of Central Park. [1]
- You can make the engine more efficient. This means running it hotter with higher pressure, pushing the limits of material science. [2]
- You can make the non-payload static parts of the rocket lighter. This means removing structural integrity. It also means making the lightest parts to complete hard tasks like being a valve for cryogenically cooled, literally the smallest element, hydrogen.
Both the engine and non-payload static mass are essentially asking the question "How far can I push this without it breaking". Get your answer to that question even slightly wrong on any of the thousands parts in a rocket, and suddenly all of the fuel that you're using to go in one direction fast decide that you should instead go in every direction fast.
[1] https://what-if.xkcd.com/24/
[2] Or not using chemical propulsion. However things like ion engines don't have enough thrust to get through the atmosphere and into orbit, and things like nuclear propulsion spew fallout everywhere.
I've talked about this a few times before but – https://news.ycombinator.com/item?id=47726078 - to repeat myself;
It's because we're a very primitive species, and the forces involved here are genuinely new. It's physically not possible at our current level of technology to make this "safer" due to the distances and energies involved.
I will let John Young explain it his way;
As an aside, if you've never heard of John Young, I recommend learning a bit about him. He was an incredible person. And that statement is very funny in his voice; https://www.youtube.com/watch?v=KezwDfFcFhU
He test flew the shuttle. They put an ejection seat in the shuttle – which was obviously insane. And a reporter asks him about ejecting while the solid rocket motors were burning, https://www.youtube.com/watch?v=JLU4CK7UHd4
(I'm deeply saddened that I will never get to meet the man and ask him the secret to his magical heart rate.)
and the forces involved here are genuinely new
I remember growing up with things proudly advertised as "space-age technology"... which largely meant the 1950s and 1960s, and of course it's what got us to the moon, multiple times. Yet more than a half a century later, new rockets just don't seem that impressive in comparison.
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"very primitive" - primitive in relation to who? As a species we control the planet, we rule every other species currently known to humans, how is that primitive?
We might well be the most advanced species in the universe. Seems unlikely, but we really don’t have anything else to measure against at the moment.
why did you preface this with how many times you've made your point to deaf ears in the past? Am I supposed to follow your opinions across the site?
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There are a number of ways of looking at this, which others have answered, but here's another:
The kinetic and potential energy of a 1 kg mass in orbit is around 33 MJ. The chemical energy of 1 kg of methane+oxygen propellant is only about 11 MJ.
Alternately, perfectly combusted methane-oxygen propellant has an exit velocity of around 3500 m/s. But you need about 7800 m/s to get into orbit.
Chemical energy is just very weak compared to the energy of things in orbit. It's really shocking that we can do it at all.
The result of this is that your vehicle is going to be almost entirely propellant. You simply can't just build a big, beefy rocket that's, say, only half propellant, with lots of extra safety margin for things that go wrong. Cars and bridges and things have immense margins. Airplanes, a bit less so, but still more than rockets. Rockets live right on the edge of what's possible, and as long as we use chemical thrust it'll always be that way.
Which isn't to say that rockets won't get more reliable. The Falcon 9 has had hundreds of flights since the last failure, and it isn't as optimized as it could be. But there will be a lot more failures before we get there.
Simplest explanation comes from Tory Bruno: they design with a factor of safety just above 1. 1.1 to 1.25. This is one of the reasons they wait for good weather to launch… they are trying to maximize payload. Also until recently, it’s been sort of a vicious cycle: rocket is very exquisite and expensive, so spacecraft needs to last longer and thus gets more exquisite and expensive, etc.
Have you seen how many issues race cars have? Same shit. It goes on and on.
One might make the same observations about software “bugginess” and complexity. The pace of improvement is such that everyone is riding the bleeding edge and, as such, the carpet inevitably gets a few spots of blood on it.
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I believe the safety factors in Falcon 9 are 1.4. NASA credited SpaceX with using safety factors larger than normal for aerospace.
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Well, rockets are more than a millennium old, but sure, solid fuel rockets tend to be less volatile by definition.
Honestly we’re really good at not prematurely combining tens to hundreds of tons of high-energy fuel and oxidizer put right next to each other and then combining them at several tons per second in a highly controlled way using a very complex system of plumbing and turbopumps powered by the same reagents.
Starting/igniting a liquid fueled rocket engine is an inherently complex process - everything has to be sequenced just right to get engines chilled, turbo pumps up to speed, any gaseous fuel vented and harmlessly ignited before it builds up, ignition of fuel, etc.
Here's a 1hr video from the Everyday Astronaut explaining the process and everything that can go wrong.
https://www.youtube.com/watch?v=bAUVCn_jw5I
I think more you’re just at the absolute margins of engineering to get to escape velocity. Those constraints haven’t changed, so until some major material or fuel advance happens things will continue to go wrong.
Probably the mistake is to keep relying on rockets and propellants. Need to think more revolutionary. But hard for a startup to do that, usually needs gov backing.
> Does anyone else find it surprising that rockets are a century old[1] and yet still seem to fail spectacularly with amazing regularity, often due to some small flaw?
Not really. Rocketry is hard.
You deal with extremes in temperature (both high and low), extremes in speed and acceleration, and you're doing it all atop massive amounts of extremely explosive fuel. And, if you feel really crazy, you do it all while attempting to protect one or more fragile bags of meat and water as you travel into an environment that wants to kill them all.
Even when you think you've accounted for everything, something like a piece of foam insulation falling from an external tank is all it takes to produce a catastrophic failure later on during re-entry.
See: https://en.wikipedia.org/wiki/Space_Shuttle_Columbia_disaste...
This feels like more a matter of scale than anything else? We’re able as a species to do some absolutely insane wizard shit elsewhere (chip fab?), we just haven’t launched enough rockets yet to get there.
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You know what they say, nature abhors colossal tanks of high-explosive.
Something like a bridge is easily possible with the gravity of our planet. If gravity were twice as strong, we would still have bridges. Orbital rockets are only barely possible (with practical, known chemical propellants). If gravity were twice as strong, we either wouldn’t have them or we would have to use very different methods of propulsion.
Given that it’s just barely possible, you can’t just make things twice as strong as you think you’d need to, just in case something unexpected happens. Anyhow when something moderately unexpected happens, that means you may get a giant fireball like we saw today.
Rockets are hard for sure but also almost nobody notices if there's a minor bug in your delivery app that causes it to crash every once in a while - but it can matter alot if there's a microscopic crack in a rocket engine that makes it blow up. Defect rate might be the same but the (literal) blast radius is much higher.
aerospace is operating at the absolute limit of what can be asked of known materials science
And an unexpected transient load or heat flux can easily exceed material limits, or materials can have flaws. The ability to qualify the materials, components and processes for aerospace use is an achievement in itself.
Exactly this. It is relatively easy to make something mechanical more safe provided you have have a significant material buffer. Rocket abhors additional material weight so everything has to run with a limited buffer space for safety.
The engines are seeing significant development. These engines are the most complex of their kind, they inject the fuel and oxidizer as hot gases. Google full flow staged combustion cycle
What you refer to as the rocket, meaning the tube itself isn't failing. It's just that a big explosion will treat it apart
BE-4, this rocket’s engine, is not a full flow engine.
The mass produced rockets explode very infrequently
I'm more surprised that they work at all.
Rockets are bombs. Rockets are big bombs. For a rocket to work correctly, you want it to explode a little more gently, and in one direction. The subtleties of making it explode a little more gently are where all of these failures are found.
> Is it just that they're still relatively niche machines and thus haven't benefited from mass manufacturing improvements?
Until very recently they were basically all custom with extreme tolerance requirements and absolute specifications. Nobody could have an "off day" on a single bolt, hose, nut, screw, wiring harness, etc.
It is not clear what "full duration static fire" means, but if the stage was fully fueled, the fuel tank would have contained 1000 tons of methane. The heat of combustion of methane is 55 MJ/kg. TNT equivalent is defined as 4.2 MJ/kg. In terms of heat output (not blast or other effects) this would have been equivalent to 13 kilotons of TNT.
The first atomic bomb had yield of 20 kt TNT, of which about half was in heat, and the rest in the blast and radiation.
Depending on how full the rocket tank actually was, the fireball from the rocket explosion was in the same ballpark, or possibly even larger in the size and duration of afterglow compared to that from the Trinity nuclear test.
> TNT equivalent is defined as 4.2 MJ/kg.
It isn't this simple for liquid oxygen and methane mixtures, and there's a great deal of disagreement between industry and regulators over what the right percentage of TNT equivalence is. Naturally, industry thinks the percentage is low, and regulators are skeptical, so there's a government-run test campaign going on as we speak to collect data for proper modeling.
The TNT is relevant, because the atomic bomb energy output was defined in terms of TNT equivalent. Not the energy of the blast, but the total output. For Trinity this was 20 kt, or 20*4.2 TJ.
This serves as a basis of comparison for this deflagration. If we are considering specifically the appearance of the late fireball, the heat output is the relevant figure of merit.
Assuming about 10-15% of the total bomb energy remained in the heat of the late fireball (with the rest spent on the blast wave, peak thermal radiation and neutron/gamma radiation), the fireball of this rocket deflagration could have exceeded the late fireball from the bomb. But this assumes the tanks were fully filled, which we do not know yet.
The methane is not mixed with oxygen when it's still in the rocket tank, so it can't all explode - most of it will just burn off.
It's still a big boom, but not anywhere close to what world occur with optional mixing.
Counting frames on YouTube, I get about 0.3s for the blast front to reach the top of the 600ft towers. That gives an estimate of around 600 tons TNT so definitely nowhere near all the fuel exploding.
how did you compute that?
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> not clear what "full duration static fire" means
You fire the rocket as if it’s going to space, but you keep it on the pad. (From the engine’s perspective, it did a full launch.)
I think the point is that that phrasing has been used by rocket companies to mean a whole range of different amounts of fuel load, it's not very precise wording in practice.
From the industry: I would expect to hear "mission duty cycle" in that case. "Full duration" doesn't have a consistent meaning (a fact which is sometimes used to the marketing team's advantage).
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The problem is that there is no standard meaning for the "full duration" in this context.
Some reports say that this means "running all seven BE-4 engines at full thrust for up to 38 seconds".
In flight the engines fire for 190 seconds.
So what the full duration means, and whether they fill the tanks with just enough fuel for the firing, or with a larger amount to help the clamps to hold the stage down, all this we will probably only find out from the investigation, if the results are ever published.
I think it's amazing they can basically hold a rocket down and let it launch like that without things exploding or shearing apart from the forces. Are those the same bolts as the exploding ones they would use for a normal launch?
(on that note it's also amazing that these exploding bolts are so reliable, I can imagine even a single one not releasing would cause... Issues)
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Correction: The first stage of New Glenn carries only about 260 tons of methane. The 1150 tons is the full propellent load, liquid oxygen and liquid methane combined.
The heat from combustion of this amount would be about 3.4 kt, which is roughly the same as the heat in the late fireball of the Trinity test.
The mushroom cloud from the New Glenn explosion was also substantial: https://photos.app.goo.gl/a7uPVjsB5n453SJA7
the video is available, it's a large explosion, but nowhere near a trinity mushroom cloud
An unfortunate setback but rockets are hard.
The fact that the US has multiple extremely active commercial ventures plus a vibrant government programs with launches every few days just highlights har far ahead the US has become in this area of tech. Many people have never seen a rocket launch ever and yet for a big part of the US looking up in the sky and watching the amazing sight of a rocket going through staging is just a normal Tuesday evening.
That sort of expertise and base of scientists and engineers is not something other countries can just quickly replicate. For a while it looked like the US had put space on the back burner but now it’s back and bigger than ever before.
The occasional test going boom is just part of the fun in the end.
Achievements of SpaceX are enormous. But is US actually far ahead? Both China and EU have pretty much the same capabilities for space exploration.
China is behind and making progress, but still hasn’t hit key milestone the US hit decades ago. The EU isn’t even close.
> Both China and EU have pretty much the same capabilities for space exploration.
China maybe soon, but the EU is not close.
Ariane 6 is in no way comparable to either SLS or Starship or New Glenn. It does 10t to low-earth orbit, 4t to lunar-transfer orbit.
Reminds me words, attributed to one of first soviets astronauts: "You're sitting on top of 9 story building, completely filled with fuel and they say to you: don't worry, we calculated everything".
The exploded one was about 15-story building.
Don't worry we've solved this problem. It's called a LES.
SpaceX Starship also exploded during a static fire test on June 18, 2025.
https://www.cbsnews.com/news/spacex-starship-upper-stage-exp...
That was at the separate upper stage test stand. SpaceX built and mounted a temporary replacement on the main test and launch stand.
The major difference is that this is currently the only New Glenn launchpad, which is likely to cause major launch delays.
Have we confirmed nobody was hurt?
EDIT: Everyone is fine [1]. Go ahead and make jokes.
[1] https://x.com/blueorigin/status/2060172114796204539?s=20
Not sure why you were downvoted. That’s the first thing I thought of, too. They got all the people out of the area, standard procedure but still, this was a huge boom.
Blowing up on the launch pad is like a rite of passage for every serious rocket program. The engineering margins are thin out of necessity, and lots of things conspire to eat through them.
Rocket science is hard, and rocket physics are unforgiving. If the planet was just a little bit heavier, we would not be able to leave it with chemical rockets at all.
Space launch is hard
Tragic. But spaceflight isn't easy. Easy to have your expectations shifted as a watching fan after so many successful launches in recent times.
Expectations are shifted with experience in all areas of human activities.
NSF is also reporting that it took out one of the lightning rod towers. It'll be interesting to see how much damage the pad and ground equipment sustained.
It was very likely the largest explosion in Florida spaceflight history. Considerably larger than when SpaceX blew up AMOS-6 in 2016, and that required a full rebuild of the pad infrastructure over 18 months.
Very unfortunate, but strategically this changes nothing for US spaceflight. If anything, SpaceX will continue to increase its dominance.
Blue Origin is challenging SpaceX - they are not the incumbent. I'm not sure how you can say that SpaceX will increase dominance despite this.
One can be the dominant player in a field and still increase dominance.
SpaceX will increase the lead from all potential competitors even further.
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Unless the comment was edited, the person you replied to never said anything about "despite"?
Blue Origin are challenging SpaceX about as much as I’m challenging Michael Jordan.
Sure we’re playing the same game, but the divide is enormous
Please look at total mass launched to space by SpaceX vs the rest of the world combined. They are the most incumbent launcher in history.
Unless you're talking about moon landers specifically.
Anyway, competition is good and this is a bummer.
it'll probably be a favorable event for SpaceX's IPO.
Surely not as favorable for the IPO as SpaceX’s own recent explosion and multiple engine failures?
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Also known as a Rapid Unscheduled Disassembly in engineer speak.
Technically I think this was a Rapid Tank Emptying. RUD implies launch.
I don't think RUD implies launch. It can happen with an engine alone, without rocket.
Blue Origin's tortoise slow-and-steady approach to development ia increasingly looking stupid.
There does seem to be a certain amount of failure that is necessary to be able to get it right. One would expect that number to decrease over time with each new rocket company but I don’t believe it decreases as much as each company would like to believe.
Move fast and blow things up early rather than slowly. The minimum number of explosions must be met!
> A source indicated that one of the lightning towers may not be salvageable, and that the transporter-erector may also be damaged beyond repair.
My first thought is why wasn't the t-e moved away before launch?
Blue’s TEL is part of the launch pad. You can see it retract in some of the explosion videos.
https://www.instagram.com/reel/C87e9x0tLix/
It was a static fire, not a launch. Also means that payload was not lost as out wasn’t yet integrated
Katy Perry was not lost, the world can go on
Is it normal to load ALL the propellant when doing a static fire? (I presume that's the case, anyway, given the sheer magnitude of the kaboom.)
I know a WDR typically would, but I don't think they perform an ignition for those.
The weight of the propellant helps hold the rocket on the pad during the test fire, reducing how much force the hold-downs need to exert to keep the rocket on the pad, and stressing the rocket's structure in the same way it will be stressed at launch.
Test fires with a near-empty rocket would put considerably more force on the pad's hold-downs and the corresponding parts of the rocket's structure.
Blue also had a fuelled 2nd stage on top of the booster for the static fire, which is not out of the ordinary.
SpaceX has a "cap" that is held down with cables that it uses when it needs to test-fire a first stage by itself at its McGregor test site; static fires at launch sites are usually done with the 2nd stage on top.
Right. The forces these things produce are massive. I only know the specifics for the Space Shuttle, but when it is at full liftoff thrust (liquid and solid boosters) there's just no way to keep it leashed to Earth. It's going up whether you want to or not.
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In September 2016 almost exactly the same thing happened to a Falcon 9 at the Cape, also on a static fire. New Glenn is bigger, so bigger bang, but pretty much exactly the same thing.
Off the top of my head, I recall in SpaceX's case it was a helium tank failure- a helium tank weld failed and the helium tank itself shot through the cryogenic oxygen, hit the far wall, and gave off a spark. But that sort of failure is only apparent when everything is pressurized correctly, which means tanks have to be full. The goal of the test is that you detect that sort of failure before it goes boom and then can fix it.
https://www.youtube.com/watch?v=_BgJEXQkjNQ is a video of SpaceX's failure.
Wasn't a bad weld; it was a bad interaction between liquid or solid oxygen and what were previously thought to be inconsequential defects in the composite-overwrapped pressure vessel the helium was loaded into.
Quoting from one of the press releases:
"The recovered COPVs showed buckles in their liners. Although buckles were not shown to burst a COPV on their own, investigators concluded that super chilled LOX can pool in these buckles under the overwrap. When pressurized, oxygen pooled in this buckle can become trapped; in turn, breaking fibers or friction can ignite the oxygen in the overwrap, causing the COPV to fail. In addition, investigators determined that the loading temperature of the helium was cold enough to create solid oxygen (SOX), which exacerbates the possibility of oxygen becoming trapped as well as the likelihood of friction ignition.
"The investigation team identified several credible causes for the COPV failure, all of which involve accumulation of super chilled LOX or SOX in buckles under the overwrap."
https://web.archive.org/web/20170216160231/http://www.spacex...
Was that when a SpaceX engineer demanded immediate "roof" access to ULA's pad because they suspected someone at ULA had used a sniper rifle to shoot at the Falcon? Crazy times.
Edit: yes it was https://arstechnica.com/space/2025/05/spacex-pushed-sniper-t...
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I think this makes sense, but then what’s the learning - dont make bad welds? I imagine they were already trying to do as best they could. Or perhaps “however stringent you think your checks are, they need to be more stringent”. And then learning that repeatedly is somewhat spectacular.
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How do they determine the cause of failure in a things like this?
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I don't know anything about this particular launch, but one reason static fires sometimes load more fuel than you'd think is that the hold-down clamps aren't rated for the total thrust of the vehicle. Launch thrust is usually 1.2-1.6x the launch weight (if it's <1x you will not go to space today), so after subtracting gravity you've got 0.2-0.6x the weight acting upwards on the clamps. But rockets are mostly fuel by weight, so if you static fire it nearly empty, then that gravity term goes to ~zero, and the clamps have to hold the full 1.2-1.6x. You could overbuild them to handle that -- which isn't the end of the world, because they don't need to fly -- but it can be easier to just add extra fuel and detank it afterwards.
Why use fuel, though? Is there something about its specific density and weight distribution that rules out using other types of ballast?
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Isn’t that the point of the test fire? To find out if there’s a problem that will make it go boom
You don't need to fill it all the way up for that. If in flight your engines burn for 2 minutes, but your static fire is only a few seconds you can see why.
This shows the importance of choosing the correct jargon and terminology, and then employing clear and unambiguous communication. They asked engineers for a static fire test. Got one hell of a fire, so that’s good, but it wasn’t very static…
https://xcancel.com/nasaspaceflight/status/20601649284728548...
Thats a very impressive bang
Yikes. That's a big bang.
On the scale of bad 1-10 where 10 is the absolutely worst case this is a 12 easily.
(Elon’s strategy of blowing up smaller versions of their rockets more or less deliberately doesn’t sound so insane in the light of this.)
I'd say on a scale of bad 1-10, 9 and 10 are reserved for incidents that cause loss of human life. YMMV.
Loss of human life in a static fire is criminal. Why would anyone be that close?
There was no loss of life in this static fire failure.
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The Plainly Difficult channel on YouTube reserves 1 and 2 for incidents that don't cause loss of human life.
yeah if you want to put it in the best light in terms of 9/11's this is zero 9/11's of casualties. Not how I'd judge it.
SpaceX had a very similar failure during a static fire test in 2016 that destroyed the rocket, payload, and a few key parts of SLC-40 that took them over a year to repair and return to service (September 2016 -> December 2017). The concrete flume trenches were literally melted.
https://spaceflightnow.com/2016/09/01/spacex-rocket-and-isra...
That was a full size rocket on a real mission with the $200M payload on board during the static fire, which is ostensibly worse. The payload was not integrated yet in Blue Origin’s case.
There are massive machines filled with reactants under high pressure and cryogenic temperatures.
It is amazing that this doesn't happen more often.
I won't forget that a bold trio went out to the pad during the Artemis I countdown to tighten some bolts for the launch: https://www.nasa.gov/humans-in-space/artemis-red-crew-team-h...
It looks like the explosion starts from the second stage
Air balloon
excessive fuel delivery failure probable IMO. The direction and source of explosion seemed localized at first.
Man they spent a huge amount on the launch infrastructure and it was ready long before the rocket. It was waiting for a long time. And now it reversed.
Static fire more like dynamic fire
Looks even crazier in this angle:
https://x.com/SawyerMerritt/status/2060174287563116696/video...
https://xcancel.com/SawyerMerritt/status/2060174287563116696...
The timing of this so close to SpaceX IPO is seriously sus.
A kid's toy broke.
It makes me happy though -- to see a tax-evader adolescent Ersatz-toy fall into pieces, hopefully will delay the big ongoing tech-bro op to convert narcissism and tax dues into CO2.
It looks to me like the initial explosion was at the upper part of the rocket. Reminded the Starship explosion https://x.com/NASASpaceflight/status/1935548909805601020 where on 0.25 speed also visible what the start of the catastrophe was at the upper part.
Interesting that just 2 days ago NASA picked Blue Origin instead of SpaceX for this year Moon flights.
On a sidenote, one can wonder how much, giving coming SpaceX IPO, it costs for Bezos to hire a Starship engineer :)
Analysis video by Scott Manley notes that other comparable tests did not have visible fire at all, so it seems it started lower on the rocket and that the upper fire ball was either a secondary explosion or something coming up the transporter stand: https://www.youtube.com/watch?v=aaR6yEE-Myo
And if anyone is curious what is N1?
> It is possibly the most dramatic and powerful rocket explosion since the Soviet Union’s N1 rocket was destroyed during a launch attempt in 1969.
Did they blow up a pad? Or just a test stand?
EDIT: Oh crap, they took out a launch complex.
Pad. And one of the lightning protection towers. And the transporter-erector.
Blew Origin
B.O.N.G goes up in smoke.
As an aside, that acronym is something you would expect out of Musk and yet Blue Origin sort of accidentally got it themselves.
There's got to be better way than burning a shittonne of fuel. Anyone else know?
Nukes.[1] Lasers. [2] (Doesn't work, yet.) Balloons.[3] (Floating megastructures in the upper atmosphere is hard.) Giant cannon. [4] (Downside - huge g-forces on payload.) Extra fun with angular momentum.[5] (Even higher g-forces.) Exotic materials[6], with novel failure modes.[7]
Humanity has not been idle when it comes to imagining alternate ways to get to orbit. But so far, the only one that works in practice is rockets.
1. https://en.wikipedia.org/wiki/Project_Orion_%28nuclear_propu...
2. https://en.wikipedia.org/wiki/Laser_propulsion
3. https://en.wikipedia.org/wiki/JP_Aerospace#Airship_to_Orbit_...
4. https://en.wikipedia.org/wiki/Space_gun
5. https://en.wikipedia.org/wiki/SpinLaunch
6. https://en.wikipedia.org/wiki/Space_elevator
7. https://www.gassend.net/publications/FateOfABrokenSpaceEleva...
Does anyone know what the fuel level was for the static test fire vs the upcoming mission profile? I want to know how big the explosion for new Glenn would be fully loaded.
NSF live https://www.youtube.com/watch?v=Jm8wRjD3xVA
Shame. I would love to see a competitor rein in SpaceX.
I agree with the sentiment, but while New Glenn is likely a more economical rocket, it doesn't even have the same payload capacity that Falcon Heavy had eight years ago. They are nowhere near a meaningful competitor yet, and if Starship actually gets up and running the mass to LEO gap between the two systems is like 5x+ with Starship aiming for full reusability while NG expends the second stage. Ofc even whimpy competition is still competition, and BO does have deep pockets.
> rein in? You don't like going to space? What do you have against progress?
Rein in their margins is probably a better term. I’m a spacex fan but I’m reminded of what happens to every darling leader that crushes competition. It gets complacent, uses shitty tricks to cut out competitors, and raises prices.
I saw this at Google and it’s what will happen to SpaceX (already starting with Starlink pricing) if there isn’t someone to keep the competitive pressure on.
I have a lot against its owner, who has been enabling a corrupt administration and boosting outright supremacists on social media. Not to the corrupt action of the fast track listing and the voting structure of SpaceX. And the fraudulent acquisition of xai and x that is basically taking from SpaceX to pay off other investors
SpaceX had to blow up plenty to get to where they are.
Yeah, but the vast majority of those were planned, and at least most exceeded expectations.
Was this an expected outcome? It doesn’t sound like it, but I’ve not really investigated it deeply.
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It looks like SpaceX blew up ~20 times while Blue Origin has blown up ~4
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Hooray! A static test fire caught a problem.
Crap! There was a serious latent problem for the test fire to find.
I will remember this when someone tells me how my little fireworks once a year is bad for environment.
Might not be that bad for the environment but holy hell does it turn air quality to shit the next day.
I am not sure whether you talk about those fireworks for few minutes/hours or these quite common rocket explosions + EV fires...
Personally I don't even own a car, so don't go on me with some carbon emissions and polluting enviroment, 95% of year I use public transport (most of the time electric trams), only 1-2 a year a ride a car when visiting mother/father.
sweep up after yourself and we’re good, but if you leave your firework trash out for a week we have problems. You’ll have to watch me passive aggressively clean up after you.
I always clean up after myself, often even just to be sure water it, I became fan of fireworks just recently after Czech gov basically banned them because "think of the animals", yeah, big cities are natural animal habitat as everyone knows, especially dogs barking and shitting everywhere every single day 365 days a year, but God forbid we have once a year firework, think of the poor dogs.
Now they came up with maps where fireworks are allowed and apparently 90% of Prague is covered with beehives (you can't have firework within like 250m from beehive), it doesn't matter bees don't really care about them at all in freezing 1st January, but let's protect them and ruin fun for everyone!
You need to understand that this money is well spent, rather than going to feeding starving children or buying medicine to help solve the Ebola crisis in Africa, this is actually "better for mankind".
and wait till you see US national defense budget :-))
imagine if they stopped financing it for one year and used all those finances to finance for instance cancer research
or maybe for starters they could just stop supporting genocidal regimes killing thousands of children, that would be pretty cheap
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So uh those Artemis commitments huh.
There is always Starship.
Starship already holds the other half of those commitments. I saw some speculation that they couldnt suddenly double their number of Artemis launches. The timelines blasted either way.
Video: https://xcancel.com/nasaspaceflight/status/20601649284728548...
Another angle: https://xcancel.com/SawyerMerritt/status/2060174287563116696...
That "Another angle" truly is spectacular.
In the video, some debris seemed to fly away from the explosion in a wavy path (top left). I thought things only moved like that in video games. What causes that kind of movement?
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IPO must be in the works!
There's got to be better way than burning a shittonne of fuel. Anyone else know?
It's a zero sum game. It all comes from the earth
> There's got to be better way than burning a shittonne of fuel.
We would be doing it
Space elevators!
Would be really curious to learn more about how rocket scientists are using (or not using) LLMs.
This is a fair question on its own. It comes across as pretty disrespectful within the context of the thread.
no one died, relax
OP, one must show respect to the scattered remnants of rocket debris.
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Honestly, why? I can't speak for BO, but at NASA, we're all learning what the technology can and can't do just like everyone else. You can bet your ass that no one is vibe-coding any part of the rocket without thorough review of every line of code and thorough testing at multiple levels though.
As long as the thorough reviews are done that is 100% reasonable.
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The suggestion being that some software here was vibe coded??
That's how rocket science works right? Just vibe code the control systems over the weekend and YOLO the launches.
I asked Claude Opus 4.8 to estimate the size of the explosion in kilotons of TNT, and it estimated the explosion at 0.18 kilotons of TNT (with an ~0.13–0.26 error range).
For comparison, the N-1 rocket explosion was around 0.5 kilotons of TNT.