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SpaceX’s backup Dragon launch pad on track for 2023 debut
SpaceX has begun building a backup launch pad for its Cargo and Crew Dragon spacecraft and says the facility could be ready for use as early as fall 2023.
Reuters first revealed those plans in June 2022. They arose because NASA reportedly told SpaceX it was worried that the company’s first Florida Starship launch site – colocated at the only pad currently able to launch SpaceX Dragon spacecraft – could add too much risk. In September 2022, NASA and SpaceX acknowledged plans to modify LC-40 for Dragon launches and indicated that both parties had decided to proceed.
Four months later, SpaceX and NASA have provided another press conference update. Officials confirmed that construction is already partially underway and reported that LC-40 could be ready to support its first Dragon launch less than a year from now.
The update that's rolling out to the fleet makes full use of the front and rear steering travel to minimize turning circle. In this case a reduction of 1.6 feet just over the air— Wes (@wmorrill3) April 16, 2024
Because Boeing’s comparable Starliner capsule is years behind schedule and still unqualified to launch humans, NASA has relied almost exclusively on SpaceX’s Crew Dragon to launch its astronauts to the International Space Station (ISS) since 2020. Starliner should be ready to supplement Crew Dragon’s operational astronaut launches by the end of 2023 or early 2024, alleviating some of that pressure.
NASA, however, chose to develop two spacecraft to guarantee that one spacecraft would likely be available if the other was grounded for any reason. Adding the possibility that a giant, new, experimental rocket (Starship) could potentially halt all SpaceX Dragon launches in one fell swoop was apparently one bridge too many for the agency.
SpaceX’s answer to the problem was about as simple, elegant, and cheap as possible. The company has two operational Falcon launch pads in Florida, and it proposed to modify the second pad. SpaceX’s Cape Canaveral Space Force Station (CCSFS) LC-40 pad is located on a secure military base and has an even longer history of successful Falcon 9 launches than Pad 39A. It also appears that its layout will allow SpaceX to add a Dragon access tower without requiring major redesigns or months of downtime.
LC-40 is SpaceX’s most productive launch pad by far, and the company intends to launch up to 100 times in 2023. It’s thus crucial that the pad remains as active as possible as it’s modified – a major challenge. A combination of luck and the fact that the launch pad is already operational is the only reason that’s possible.
Modifying SpaceX’s busiest pad
In theory, SpaceX needs to do relatively little to enable Dragon launches out of LC-40. Dragon spacecraft are processed for flight at a separate facility and only head to the pad once they’re ready to be attached to a Falcon 9 rocket. The biggest modification LC-40 needs is a launch tower, but SpaceX ironically has experience building giant towers in sections – and offsite – through Starship.
LC-40’s Dragon access tower requires far less complex plumbing and should be smaller and easier to prefabricate and assemble. Regulatory documents indicate that the new tower will stand 81 meters (265 feet) tall – almost a third shorter than the 110-meter-tall tower SpaceX modified at Pad 39A for the same purpose. LC-40 will also need a swinging access arm to connect the tower to Dragon’s hatch. That arm can also be constructed offsite, further reducing the amount of downtime required.
The most disruptive modifications may involve LC-40’s transporter/erector (T/E) device, which rolls Falcon 9 out to the pad, raises it vertical, holds it down with giant clamps; and hosts a maze of plumbing that fuels, pressurizes, and powers the rocket. The top of LC-40’s T/E is fitted with a brace designed to support Falcon payload fairings. In comparison, 39A’s T/E was designed with swappable ‘heads’ that allow SpaceX to switch between Dragon and fairing configurations in a matter of days. The top of LC-40’s T/E also appears to be somewhat removable, but SpaceX may still have to halt launches for a few weeks to get the T/E up to spec and modified for Dragon.
SpaceX says that LC-40 will be ready to support its first Dragon launch as early as fall (Q4) 2023. Its first Dragon mission will carry cargo to the ISS, meaning that the tower, arm, and pad will not need to be immediately human-rated. In theory, SpaceX could even launch Cargo Dragon 2 from LC-40 without a tower or arm, as the only purpose of the tower during uncrewed missions is to load volatile cargo at the last possible second. SpaceX could even revert to a practice that dates back to its original Dragon 1 spacecraft and devise a method to late-load cargo while Falcon 9 and Dragon are still horizontal.
The tower and access arm are only essential for Crew Dragon launches, during which astronauts must board the spacecraft a few hours before liftoff. More importantly, the same arm and tower would be used to escape Dragon and Falcon 9 in case of a minor emergency. NASA requires an escape (egress) system to human-rate a launch pad and rocket. SpaceX met that requirement at Pad 39A with a “slidewire basket” system that carries astronauts to a concrete bunker several hundred feet away from the rocket. Before LC-40 can be human-rated, SpaceX will likely need to build the same basket-and-bunker system or come up with a viable alternative.
Once complete, SpaceX will have two pads capable of supporting all Crew and Cargo Dragon launches. With that redundancy in place, NASA should be far more open to regular launches of SpaceX’s next-generation Starship rocket out of Pad 39A. Access to multiple pads will likely be essential for Starship to complete NASA’s Human Landing System (HLS) contracts, which will culminate in the giant rocket sending humans back to the Moon for the first (and second) time in half a century in the mid-to-late-2020s.
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
