News
SpaceX ready for 60-satellite Starlink launch debut: third time’s the charm?
SpaceX is approximately two hours away from its third Starlink v0.9 launch attempt, an ambitious batch of 60 satellites that will also be the company’s heaviest payload ever.
As hinted at by the name “Starlink v0.9”, these sixty satellites are not quite the final design. More a beta test at an unprecedented scale, several critical new technologies and strategies will be put to the test on this launch, ranging from a seriously unorthodox satellite deployment method to the near-final krypton-fueled electric thrusters. Same as SpaceX’s May 15th and 16th launch attempts, Starlink v0.9’s third try has a 90-minute window that opens at 10:30 pm EDT (02:30 UTC), this time on Thursday, May 23rd.
Third time’s the charm ?
May 23rd’s Starlink v0.9 launch attempt will be the mission’s third, preceded by May 15th – scrubbed by high-altitude wind shear – and May 16th, cancelled before fueling began in order to troubleshoot and update the software aboard the 60 Starlink satellites. After a week of concerted effort from SpaceX technicians and software developers, those issues have been more or less dealt with and the first batch of Starlink satellites are once again ready for orbit.
According to SpaceX, the massive payload of 60 flat-packed Starlink satellites weighs approximately 18.5 tons (16,800-18,500 kg, unclear if short or metric tons). Either way, it will easily break SpaceX’s previous record – likely Crew Dragon’s DM-1 debut – and become the heaviest payload the company has ever attempted to launch. Despite the sheer size and mass of the payload, Falcon 9 booster B1049 – launching for the third time – will still be able to land aboard drone ship Of Course I Still Love You (OCISLY) some eight minutes after launch.
If the recovery goes well, B1049 will become the third SpaceX booster to successfully complete three orbital-class launches and landings, paving the way for a series of fourth flights (and beyond) later this year.
Cubesats, meet Flatsats
Aside from the mission’s impressive rocket performance requirements, Starlink v0.9 will also serve as a huge beta test of a dozen or more new technologies. The most visible of those has to be each satellite’s truly unique flat, rectangular form factor, as well as SpaceX’s use of flat-packing in place of a dedicated structure for holding and dispensing the satellites. It’s unclear if there is some additional reinforcement or if the satellites themselves provide all of the stack’s strength. If the latter is true, the satellites at the bottom must survive massive forces – ranging from ~7000 kg at rest to 35,000+ kg at the end of Falcon 9’s second stage burn.
Aside from their exotic structure, each Starlink satellite also carries a single-panel ~3 kW solar array using one of two experimental deployment mechanisms. Each satellite’s main propulsion comes from an unknown number of Hall Effect thrusters (i.e. electric/ion thrusters) fueled by krypton instead of the usual xenon. SpaceX’s internally-developed krypton thrusters are the only known examples to have been tested in orbit.
Aside from thrusters, SpaceX CEO Elon Musk also believes that the company’s space-based phased array antennas – also developed in-house – are more advanced than any operational competitor on Earth. Musk also revealed that SpaceX would attempt to use a bizarre and largely untested method of satellite deployment, spinning Falcon 9’s upper stage and releasing the satellites with inertia instead of traditional springs or pushrods.
Regardless of whether everything works as planned, the launch is going to be a spectacular one and the webcast may even include views of the bizarre satellite deployment. Catch SpaceX’s live coverage of the mission – likely to include new details about the Starlink constellation – at the link below. Coverage will begin ~15 minutes prior to liftoff.
Check out Teslarati’s Marketplace! We offer Tesla accessories, including for the Tesla Cybertruck and Tesla Model 3.
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
