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SpaceX might launch first Starlink Gen2 satellites next week
Update: It no longer appears that SpaceX’s last Starlink launch of the year will carry true V2 or V2 Mini satellite prototypes for its next-generation Starlink constellation. That has only deepened the layers of mystery surrounding the mission.
SpaceX has told the US Federal Communications Commission (FCC) that it plans to begin launching its first next-generation Starlink Gen2 satellites before the end of 2022.
The FCC only just granted SpaceX partial approval of its Starlink Gen2 constellation, which has been under review since May 2020, in late November 2022. Just a week or two later, in several filings asking the FCC to expedite Special Temporary Authority (STA) requests that would allow it to fully test and communicate with its first next-generation satellite prototypes, SpaceX said [PDF] that it “anticipates that it will begin launching Gen2 satellites before the end of December 2022.”
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
In most of the main STA requests filed in early December, SpaceX appears to be asking the FCC to add Starlink Gen2 satellites as approved points of communication for user terminals and ground stations that are already licensed. Those include its new high-performance dishes, newer base-model dishes (both fixed and in motion), and first-generation (round) dishes. While the FCC’s recent actions on Starlink do not raise confidence in its consistency, objectivity, and rationality, these requests should be shoe-ins.
SpaceX also wants permission to activate Very High Frequency (VHF) beacons that are meant to be installed on all Starlink Gen2 satellites. Those beacons would serve as a backup to existing telemetry, tracking, and command (TT&C) antennas and decrease the odds of a total loss of control by ensuring that SpaceX can remain in contact with Gen2 satellites regardless of their orientation – an ability that would obviously improve the safety of Starlink orbital operations.
Given how unusually long it took the FCC to review SpaceX’s Starlink Gen2 applications and how arbitrarily strict it was with its partial Gen2 license grant, it’s hard to say if the FCC will grant these STA requests or how long it will take if it does. SpaceX finds itself in a strange position where the FCC has given it permission to begin launching up to 7500 Starlink Gen2 satellites, but has not granted SpaceX permission to use those satellites to communicate with user terminals.
To the FCC’s credit, a constellation operator has never been ready to launch satellites less than one month after launches were approved, and it’s likely that the processes to ensure those satellites can be properly used after launch are ongoing. Additionally, because of the FCC’s arbitrary license restrictions, SpaceX is not allowed to launch or operate any Starlink Gen2 satellites outside of a narrow range of altitudes (475-580 km). After launch, Starlink Gen2 satellites will likely take around two or three months to reach those operational orbits, only after which can SpaceX begin using them in earnest. As long as the FCC approves most of SpaceX’s December 2022 STA requests, the disruption to Starlink Gen2 deployment and on-orbit testing should thus be limited.
Next week?
While SpaceX’s schedule targets can often be easily dismissed for future projects, there is evidence that SpaceX will actually attempt to launch the first Starlink Gen2 satellites before the end of the year. Earlier this month, SpaceX received permission to communicate with a Falcon 9 rocket for a mission called Starlink 5-1. One of five orbital ‘shells’ that make up SpaceX’s first-generation Starlink constellation does technically have zero satellites and is awaiting its first launch. But that shell (Group 5) is polar, meaning that its satellites will orbit around Earth’s poles, and the STA license the FCC granted indicates that this launch will be to a more equatorial inclination, which would not make sense for a Group 5 launch.
It’s thus possible that SpaceX decided to repurpose the STA for its first Starlink Gen2 launch, which the company cannot currently launch to an inclination other than 53 degrees – roughly the same trajectory indicated by the document. Starlink Gen1 has two 53-degree shells, Group 1 and Group 4, and both are nearly complete and would likely be called Starlink 1-XX or 4-XX in FCC filings. Combined with SpaceX stating in its VHF beacon STA request that initial Starlink Gen2 launches will start in “late December 2022,” and unofficial manifests indicating that SpaceX has a Starlink launch scheduled as early as December 28th, it certainly appears that first Gen2 satellites will reach orbit later this year.
More likely than not, they will be Starlink “V2 Mini” satellites – a downsized variant created to maximize the efficiency of Falcon 9 Starlink Gen2/V2 launches while SpaceX’s next-generation Starship rocket remains stuck on the ground. The Starship-optimized Starlink V2 satellites SpaceX initially hoped would be the only version reportedly weigh about 1.25 tons (~2750 lb) and measure roughly 6.5 by 2.7 meters (21 x 9 ft). According to an October 2022 FCC filing, Starlink V2 Mini satellites will still be several times larger than today’s Starlink V1.5 satellites, weighing up to 800 kilograms (~1750 lb) and measuring 4.1 by 2.7 meters (13.5 x 9 ft).
SpaceX says Starlink V2 Mini satellites will also have a pair of massive solar arrays with a total array of 120 square meters (~1300 sq ft). Assuming V2 Mini satellites are roughly as power-efficient as V1.5 satellites and use similarly efficient solar arrays, that indicates that could offer around 3-4 times more usable bandwidth per satellite. Assuming SpaceX has again found a way to use all of Falcon 9’s available performance, each rocket should be able to carry up to 21 Starlink V2 Mini satellites to low Earth orbit.
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
