News
SpaceX’s third Falcon 9 launch in 31 hours aborted by “tiny helium leak”
SpaceX’s third Falcon 9 launch in a little over 31 hours was called off seconds before liftoff after the rocket’s onboard computer detected what Elon Musk says was a “tiny helium leak.”
SpaceX takes “no risks with customer satellites,” per the CEO, so the company has stood down from its October 6th launch attempt to inspect the rocket, analyze data gathered from tonight’s attempt, and ensure everything is in order. Barring surprises, SpaceX will attempt to launch Intelsat’s Galaxy-33 and Galaxy-34 geostationary communications satellites at the next earliest opportunity, a 69-minute window that opens at 7:06 pm EDT (23:06 UTC) on Friday, October 7th.
The abort ends an opportunity SpaceX had to launch three Falcon rockets faster than ever before, but the company was still able to crush a different (internal) record with two Falcon 9 launches in seven hours on October 5th. Thanks to its relentless pursuit of ever-higher launch cadences, SpaceX will likely have many opportunities to break its record of three launches in ~36 hours over the next several months.
Intelsat’s Galaxy-33/Galaxy-34 (G33/G34) mission would have been SpaceX’s third Falcon 9 launch in 31 hours and 20 minutes following the successful October 5th launches of Crew-5 (carrying four astronauts) at 12:00 pm EDT and Starlink 4-29 (deploying 52 Starlink satellites) at 7:10 pm EDT. The hat-trick record for a non-SpaceX vehicle appears to have been previously held by the Soviet R-7 rocket family, which completed three launches in 40 hours in March 1978.
SpaceX broke that record in June 2022 when it launched Starlink 4-19, SARah-1, and Globalstar FM15 a little over 36 hours apart. It will now have to wait for another opportunity to break its own record, though it likely won’t be too long as the company continues to target 60 launches in 2022 and “up to” 100 launches in 2023.
According to a SpaceX launch controller, Falcon 9’s first ill-fated Galaxy-33/Galaxy-34 launch attempt was aborted automatically when the rocket’s flight computer “identified higher than expected cryo helium decay.” SpaceX’s Falcon rockets burn a combination of cryogenic liquid oxygen and chilled rocket-grade kerosene (RP-1), but they carry composite overwrapped pressure vessels (COPVs) filled with high-pressure helium gas to keep their propellant tanks pressurized as they’re drained. If SpaceX’s much larger Starship rocket shares some similarities, the company may also use a system of “helium injection” [PDF] inside Falcon 9 to keep its cryogenic oxygen and chilled kerosene as cold as possible. Musk later simplified the cause of the abort to a “tiny helium leak,” but the location of the leak (inside or outside of the rocket) was not specified.
Two hours before that, the Crew Dragon spacecraft SpaceX launched the day prior successfully docked with the International Space Station (ISS), delivering its ‘payload’ of four professional astronauts to the orbital outpost. One of those passengers is Russian cosmonaut Anna Kikina, marking the first time an American spacecraft has ferried a Russian to the ISS in almost 20 years. That milestone has unfortunately been muddied and overshadowed by the country’s illegal, genocidal, and increasingly suicidal invasion of Ukraine.
Crew-5 is the seventh Crew Dragon to successfully transport astronauts to the ISS and SpaceX’s eighth crewed launch overall since May 2020. Flying for the second time, Crew Dragon capsule C210 docked on its first try after a smooth 29-hour rendezvous. About a week from now, another crew of four astronauts will board a different Crew Dragon spacecraft and return to Earth, handing off the ISS to Crew-5 and ending SpaceX and NASA’s Crew-4 mission.
SpaceX is scheduled to launch at least one more batch of astronauts for NASA in March or April 2023, meaning that the company is expected to singlehandedly ensure NASA access to the ISS for almost three full years. At the start of the Commercial Crew Program and for most of its development, NASA intended for partners SpaceX and Boeing to alternate, but Boeing’s Starliner spacecraft is years behind schedule.
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
