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SpaceX putting the finishing touches on Starship’s orbital launch pad
SpaceX appears to have begun tying up a number of loose ends at Starship’s first orbital launch site, potentially setting the stage for major rocket testing CEO Elon Musk has stated could begin next month.
The list of tasks started or completed in just the last week or two is significant and each one is singularly focused on similar goals: pave the way for SpaceX to finish testing the first orbital-class Starship and Super Heavy booster and prepare for the first orbital launch attempt of the largest rocket ever built. While SpaceX’s progress towards those goals over the last several months has been decidedly slow relative to the pace of similar work completed in the very recent past, the nominal timeline Musk recently sketched out suggests that things could once again start to happen at a dizzying rate.
Launch Tower
Kicking off a jam-packed two weeks of minor to major finishing touches, SpaceX rigged Starbase orbital launch tower’s rocket-catching arms to a system of pulleys, and ‘drawworks’ in a process known as “reeving.” Thousands of feet of rope were first threaded from up, down, and through the ~145m (~440 ft) tower to act as a temporary guide for the next step. Once fully rigged, anchored, and attached to the start of the steel cable actually meant to operate the system, the tower’s ‘drawworks’ was activated for the first time to reel in the guide rope – simultaneously installing the steel cable. By November 9th, the process was more or less complete, leaving the steel cable firmly attached to the tower’s giant rocket-catching arms and able to carry their significant weight.
Thanks Ralph and @StarshipGazer! Updated diagram below. pic.twitter.com/lUvcbshKGs— LunarCaveman (@LunarCaveman) November 10, 2021
SpaceX hasn’t quite finished installing those arms and does not appear to have picked up the slack in the cable that will eventually lift them up and down the tower, but the arm assembly’s first real move is likely just a few weeks away. Notably, a bit of scaffolding around the tower’s ‘legs’ still needs to be removed before the catch arms can freely roll up and down rails welded to their exteriors. SpaceX will also need to complete shakedown testing of the arms themselves, ensuring that the massive structures’ hydraulic, electrical, and mechanical systems are all working properly.
In the near future, those arms will be used to grab, lift, and install Super Heavy boosters and stack Starships on top of them, while SpaceX also hopes to eventually use them to catch boosters and ships out of mid-air. At least for the former role, a separate arm visible about halfway up the tower in the photo above will also be crucial. Known as the tower’s Starship quick-disconnect (QD) arm or claw, SpaceX has also made significant progress on the structure, practically completing it in the last few days.
Designed to fuel Starship and stabilize the top of Super Heavy with its claw, the Starship ‘QD arm’ is also able to swing left and right both to quickly back away during launches and to make room for the catch arms during rocket catches and ship/booster stacking operations. Last week, SpaceX technicians finished plumbing the arm, which requires thousands of feet of insulated steel tubes to connect to the pad’s propellant tanks. This week, on November 23rd, SpaceX installed the last major component of the arm – the actual quick disconnect (QD) mechanism that will connect to Starship to supply power, communications, and propellant.
A few small actuators likely still need to be installed and the QD mechanism itself will have to be fully connected to pad systems but the QD arm now appears to be more or less complete and should soon be ready to fuel Starships installed on top of Super Heavy boosters.
Launch Mount
Last but not least, SpaceX performed multiple tests of the pad’s ‘orbital launch mount’ – the giant, steel structure that will support Super Heavy, hold the booster down during testing and before liftoff, and supply it with thousands of tons of propellant. On November 21st, SpaceX completed the first of those tests, seemingly venting an unknown gas out of the mount. More likely than not, it was the first simultaneous test of all 20 of the mounts Raptor Boost engine gas supplies, which – having no need to reignite in flight – will rely on ground gas supplies for ignition. Each of Super Heavy’s 20 outer Raptor engines has a small umbilical and quick disconnect mechanism, resulting in what is likely the most mechanically complex rocket launch mount ever built.
On November 22nd, the orbital launch mount’s booster quick disconnect panel actuated for the first time, showing off the first glimpse of how it will move forward to connect to Super Heavy after a booster is installed on the mount. To prevent its sensitive components from being practically incinerated each launch, the mount’s QD panel will also need to rapidly move away from Super Heavy just before liftoff.
Aside from simply avoiding direct impingement from the several-thousand-degree plume created by 29-33 Raptor engines at full thrust, that movement will also tie into some kind of hood, seamlessly actuating hatches that will close to truly protect the device. That hood was itself spotted for the first time on November 21st and will likely be installed on the launch mount and over the naked QD mechanism in the very near future.
Finally, over the last week or so, SpaceX has begun installing a number of new pipes on and around the launch mount, likely assembling a water deluge system that will help manage the extreme thermal and acoustic environment created by the most powerful rocket in history shortly before and after liftoff. When activated, a spray bar circling the mount’s full interior circumference will likely unleash several tons of water per second in a giant artificial waterfall, hopefully preventing Super Heavy from damaging itself with the sheer sound produced by its Raptor engines or violently eroding the surrounding pad or launch mount legs with its plume.
Ultimately, once all the tower, arm, and mount work described above is completed, the only obvious thing standing between the orbital launch pad and the first Super Heavy booster testing and first orbital Starship launch will be the delivery of liquid methane fuel, which could easily begin any day now.
Elon Musk
Tesla confirms that work on Dojo 3 has officially resumed
“Now that the AI5 chip design is in good shape, Tesla will restart work on Dojo 3,” Elon Musk wrote in a post on X.
Tesla has restarted work on its Dojo 3 initiative, its in-house AI training supercomputer, now that its AI5 chip design has reached a stable stage.
Tesla CEO Elon Musk confirmed the update in a recent post on X.
Tesla’s Dojo 3 initiative restarted
In a post on X, Musk said that with the AI5 chip design now “in good shape,” Tesla will resume work on Dojo 3. He added that Tesla is hiring engineers interested in working on what he expects will become the highest-volume AI chips in the world.
“Now that the AI5 chip design is in good shape, Tesla will restart work on Dojo3. If you’re interested in working on what will be the highest volume chips in the world, send a note to AI_Chips@Tesla.com with 3 bullet points on the toughest technical problems you’ve solved,” Musk wrote in his post on X.
Musk’s comment followed a series of recent posts outlining Tesla’s broader AI chip roadmap. In another update, he stated that Tesla’s AI4 chip alone would achieve self-driving safety levels well above human drivers, AI5 would make vehicles “almost perfect” while significantly enhancing Optimus, and AI6 would be focused on Optimus and data center applications.
Musk then highlighted that AI7/Dojo 3 will be designed to support space-based AI compute.
Tesla’s AI roadmap
Musk’s latest comments helped resolve some confusion that emerged last year about Project Dojo’s future. At the time, Musk stated on X that Tesla was stepping back from Dojo because it did not make sense to split resources across multiple AI chip architectures.
He suggested that clustering large numbers of Tesla AI5 and AI6 chips for training could effectively serve the same purpose as a dedicated Dojo successor. “In a supercomputer cluster, it would make sense to put many AI5/AI6 chips on a board, whether for inference or training, simply to reduce network cabling complexity & cost by a few orders of magnitude,” Musk wrote at the time.
Musk later reinforced that idea by responding positively to an X post stating that Tesla’s AI6 chip would effectively be the new Dojo. Considering his recent updates on X, however, it appears that Tesla will be using AI7, not AI6, as its dedicated Dojo successor. The CEO did state that Tesla’s AI7, AI8, and AI9 chips will be developed in short, nine-month cycles, so Dojo’s deployment might actually be sooner than expected.
Elon Musk
Elon Musk’s xAI brings 1GW Colossus 2 AI training cluster online
Elon Musk shared his update in a recent post on social media platform X.
xAI has brought its Colossus 2 supercomputer online, making it the first gigawatt-scale AI training cluster in the world, and it’s about to get even bigger in a few months.
Elon Musk shared his update in a recent post on social media platform X.
Colossus 2 goes live
The Colossus 2 supercomputer, together with its predecessor, Colossus 1, are used by xAI to primarily train and refine the company’s Grok large language model. In a post on X, Musk stated that Colossus 2 is already operational, making it the first gigawatt training cluster in the world.
But what’s even more remarkable is that it would be upgraded to 1.5 GW of power in April. Even in its current iteration, however, the Colossus 2 supercomputer already exceeds the peak demand of San Francisco.
Commentary from users of the social media platform highlighted the speed of execution behind the project. Colossus 1 went from site preparation to full operation in 122 days, while Colossus 2 went live by crossing the 1-GW barrier and is targeting a total capacity of roughly 2 GW. This far exceeds the speed of xAI’s primary rivals.
Funding fuels rapid expansion
xAI’s Colossus 2 launch follows xAI’s recently closed, upsized $20 billion Series E funding round, which exceeded its initial $15 billion target. The company said the capital will be used to accelerate infrastructure scaling and AI product development.
The round attracted a broad group of investors, including Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group. Strategic partners NVIDIA and Cisco also continued their support, helping xAI build what it describes as the world’s largest GPU clusters.
xAI said the funding will accelerate its infrastructure buildout, enable rapid deployment of AI products to billions of users, and support research tied to its mission of understanding the universe. The company noted that its Colossus 1 and 2 systems now represent more than one million H100 GPU equivalents, alongside recent releases including the Grok 4 series, Grok Voice, and Grok Imagine. Training is also already underway for its next flagship model, Grok 5.
Elon Musk
Tesla AI5 chip nears completion, Elon Musk teases 9-month development cadence
The Tesla CEO shared his recent insights in a post on social media platform X.
Tesla’s next-generation AI5 chip is nearly complete, and work on its successor is already underway, as per a recent update from Elon Musk.
The Tesla CEO shared his recent insights in a post on social media platform X.
Musk details AI chip roadmap
In his post, Elon Musk stated that Tesla’s AI5 chip design is “almost done,” while AI6 has already entered early development. Musk added that Tesla plans to continue iterating rapidly, with AI7, AI8, AI9, and future generations targeting a nine-month design cycle.
He also noted that Tesla’s in-house chips could become the highest-volume AI processors in the world. Musk framed his update as a recruiting message, encouraging engineers to join Tesla’s AI and chip development teams.
Tesla community member Herbert Ong highlighted the strategic importance of the timeline, noting that faster chip cycles enable quicker learning, faster iteration, and a compounding advantage in AI and autonomy that becomes increasingly difficult for competitors to close.
AI5 manufacturing takes shape
Musk’s comments align with earlier reporting on AI5’s production plans. In December, it was reported that Samsung is preparing to manufacture Tesla’s AI5 chip, accelerating hiring for experienced engineers to support U.S. production and address complex foundry challenges.
Samsung is one of two suppliers selected for AI5, alongside TSMC. The companies are expected to produce different versions of the AI5 chip, with TSMC reportedly using a 3nm process and Samsung using a 2nm process.
Musk has previously stated that while different foundries translate chip designs into physical silicon in different ways, the goal is for both versions of the Tesla AI5 chip to operate identically. AI5 will succeed Tesla’s current AI4 hardware, formerly known as Hardware 4, and is expected to support the company’s Full Self-Driving system as well as other AI-driven efforts, including Optimus.
Tesla confirms that work on Dojo 3 has officially resumed
Elon Musk’s xAI brings 1GW Colossus 2 AI training cluster online
