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SpaceX set for first private astronaut launch to the International Space Station
Update: SpaceX has successfully fired up Falcon 9 booster B1062 and confirmed that Crew Dragon’s second private astronaut launch is on track to lift off at 11:17 am EDT (15:17 UTC) on Friday, April 8th. SpaceX’s live coverage will begin about three hours prior.
A flight-proven Falcon 9 rocket and Crew Dragon spacecraft have rolled out of SpaceX’s Kennedy Space Center (KSC) Pad 39A hangar and been raised vertical ahead of the company’s second private astronaut launch.
Known as Axiom-1 or Ax-1, the mission – managed by third-party provider Axiom Space – aims to be the first fully private crewed launch to the International Space Station (ISS). That means that Ax-1 will launch a crew of private astronauts from a privately-operated launch site with a privately-owned rocket and spacecraft, all with zero direct government impetus or funding. Of course, the situation is a bit more complex just beneath the surface.
The focus of Axiom-1’s crew is three ultrawealthy customers:
- Larry Connor: Ax-1’s pilot and an entrepreneur who accrued his wealth through real estate
- Eytan Stibbe: a venture capitalist and former fighter pilot who could become the second Israeli astronaut ever
- Mark Pathy: CEO of Canadian investment and shipping companies
Each paying $55 million for the ten-day journey and eight-day stay at the International Space Station (ISS), Connor, Stibbe, and Pathy are bankrolling the mission. Crew Dragon’s fourth Ax-1 passenger, however, is Michael López-Alegría, a retired four-time NASA astronaut turned private (space) pilot who now works for Axiom Space.
Launch Complex 39A was originally built and operated by NASA from the 1960s to 2011 before it was leased to SpaceX in 2014. The development of the first versions of SpaceX’s Falcon 9 rocket and Dragon spacecraft were heavily funded by NASA in the late 2000s. After SpaceX won a competitive $3.1 billion contract alongside Boeing, which received $4.8 billion to achieve the same goals, NASA has almost exclusively funded Crew Dragon’s development and is (for now) its main customer. Finally, alongside Russia’s space agency, NASA has invested tens of billions of dollars to build, launch, assemble, crew and maintain the International Space Station for around three decades.
Calling Ax-1 “fully private” is thus more of a half-truth than the full reality. Nonetheless, the fact that SpaceX has significantly benefitted from NASA funding and resources – a vast majority of which it earned competitively – should not take away from SpaceX’s extraordinary merit and achievements. While NASA provided most of the resources, Falcon 9 and Crew Dragon are almost exclusively designed, built, and operated by SpaceX and SpaceX alone. SpaceX mainly provides services to NASA, which means that NASA is ultimately closer to a customer with refined taste and the final say than a second chef in the proverbial kitchen.
Axiom-1 demonstrates that well. Save for NASA benefitting from any data gathered from the mission and making relatively minor preparations for the private astronauts’ eight-day stay at the ISS, SpaceX will control and be responsible for almost every aspect of the launch.
Barring delays, Axiom-1 is scheduled to launch no earlier than (NET) 11:17 am EDT (15: 17 UTC) on Friday, April 8th. Prior to liftoff, the SpaceX and the Axiom crew must complete a “dry dress rehearsal” early on April 6th, replicating all the preparations needed for a launch up to the start of propellant loading. Later the same day, SpaceX intends to perform an integrated static fire test with Falcon 9 and Crew Dragon. If any issues arise during those tests, the launch date may be pushed back.
Crew Dragon is expected to finish docking with the ISS about 20 hours after liftoff, giving the Ax-1 crew a little over eight full days at the ISS before they’ll need to board Dragon and return to Earth. If the weather forecast for landing zones looks particularly bad or good leading up to undocking, SpaceX and NASA withhold the ability to expedite or delay the departure.
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
