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SpaceX’s first Falcon Heavy launch in three years eyes late-October liftoff
For the second time in 2022, SpaceX’s Falcon Heavy rocket has a firm launch date for the first time in more than three years.
Cursed by a seemingly relentless flood of delays impacting almost every one of the rocket’s payloads, Falcon Heavy made it within three or four months of ending its launch drought as recently as June 2022. At the time, the rocket was more or less ready to begin assembly, but NASA announced late that month that the Jet Propulsion Laboratory (JPL) and supplier Maxar had failed to finish qualifying software needed to power its Psyche spacecraft. Designed to journey to and enter orbit around the asteroid 16 Psyche, the complex trajectory required to reach it constrained the mission to a launch window sometime between August and October.
When JPL and Maxar were unable to properly test the spacecraft’s software in time for that window, they were forced to stand down and wait until the next earliest window, which begins in July 2023. That left Falcon Heavy with three more possible payloads to launch in 2022, but all three were chronically delayed and there was little reason to believe that even one of them would be ready to launch before 2023. However, Falcon Heavy’s single most delayed payload appears to have made a breakthrough, giving the most powerful rocket currently in operation at least one more shot at a 2022 launch.
Continuing an excellent series of reports tracking Falcon Heavy’s never-ending US military payload delays, Spaceflight Now broke the news with an official statement from the US Space Force, which confirmed that an unspecified industry partner had finally resolved payload problems that have delayed the military’s USSF-44 mission by two years. More importantly, the USSF spokesperson revealed a specific target of October 28th.
The US military has repeatedly offered implausible launch targets for USSF-44 with little to no official explanation for the mission’s delays, making it reasonable to appraise any specific launch date much like a boy crying wolf. But this particular target, announced within the same month as its date, is a bit more believable on its own.
Thankfully, it’s not on its own. On October 7th, SpaceX sent out an email confirming that Falcon Heavy is scheduled to launch USSF-44 sometime in October and asking members of the media to register for press site access and remote camera setup opportunities. It’s possible that the rocket or USSF-44 satellites will run into issues and trigger additional delays, but a press accreditation email is about as close as one can get to a believable guarantee that a secretive US military payload is on track for a SpaceX launch scheduled more than a week or so in the future.
The mission’s next major step forward will be the assembly of Falcon Heavy inside SpaceX’s main hangar at its NASA Kennedy Space Center LC-39A pad. Photos SpaceX shared last month and earlier this month of preparations for Crew-5, Falcon 9’s eighth successful astronaut launch, show that at least two of the four main stages that make up Falcon Heavy are already inside that hangar. One of two new Falcon Heavy side boosters was clearly spotted on September 30th.
The rocket’s expendable upper stage was also clearly visible in a September 23rd photo. Ordinarily, Falcon upper stages are nearly indistinguishable from each other, but the upper stage stored behind the Crew-5 upper stage in the foreground features a unique grey band around the bottom of its airframe. In July 2019, SpaceX tested another Falcon 9 upper stage with the same grey band, which a spokesperson explained was meant to improve the rocket’s longevity in orbit.
Long orbital coasts of six or more hours are necessary for some of the most challenging launch trajectories. Direct-to-geostationary launches are the most common type of mission to require long coast capabilities and are often demanded by the US military. The grey band’s purpose is to increase the amount of heating absorbed from sunlight to warm the liquid kerosene (RP-1) fuel contained within that part of the rocket. When it gets too cold, kerosene – which freezes at a much higher temperature than Falcon’s liquid oxygen oxidizer – becomes viscous and slush-like before it freezes solid. If ingested, slushy fuel would likely prevent ignition or destroy the upper stage’s Merlin engine.
USSF-44 will be SpaceX’s first direct geostationary launch attempt, explaining why the grey band has reappeared more than three years after its first test. Coincidentally, Falcon Heavy’s third and latest launch occurred in June 2019, just one month before that upper stage test. 40 months later, the rocket might finally launch again, and it will do so by attempting what is likely SpaceX’s most difficult customer mission to date. To enable the high performance required for the mission, USSF-44 will also intentionally expend a Falcon Heavy booster for the first time. The rocket’s two new side boosters will boost back to Florida and land side by side at LZ-1 and LZ-2, but its new center core will be expended after a single flight.
SpaceX has already finished converting Pad 39A’s mobile transporter/erector, which was previously set up for single-core Falcon 9 rockets. The T/E will eventually roll inside the pad’s integration hangar, confirming that Falcon Heavy has been fully assembled and is about to be installed on the structure. The rocket will then be rolled out to the pad and brought vertical for static fire testing, a process that will likely begin at least a week before the current October 28th launch target.
If testing is successful, Falcon Heavy will return to the hangar, have its fairing and USSF-44 payload installed, and roll out to the pad one last time. Stay tuned for updates on that ongoing process.
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
