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SpaceX’s Falcon Heavy rocket could launch a NASA space station to the Moon
According to NASA, a SpaceX Falcon Heavy rocket (or another commercial heavy-lift launch vehicle) could potentially launch the bulk of a new Moon-orbiting space station in a single go, saving money and reducing risk.
Known as the Gateway, NASA is working to build a tiny space station in an exotic and odd orbit around the Moon. Lacking any clear and pressing purpose, NASA and the Gateway’s proponents have argued that it could serve as a testbed for interplanetary missions, allowing the space agency to figure out how to keep astronauts alive and healthy in deep space. Later, it was proposed as a sort of unwieldy orbital tug and home base for crewed Moon landers, although the Gateway appears to have recently been removed from any plans for mid-2020s Moon landings.
Most likely, the station is being built in order to give NASA’s wildly over-budget, behind-schedule Orion spacecraft and SLS rocket some kind of destination worthy of their gobsmacking $2-3 billion launch cost and $35-40 billion development cost. Regardless, a space station orbiting the Moon – while lacking a clear and present scientific or exploratory reason for its existence – is undeniably cool and exciting and will indeed need to be launched into cislunar space. Previously planned to launch as separate modules that would then rendezvous and dock in at the Moon, NASA has recently decided to switch gears.
As of May 2020, NASA has awarded three critical hardware contracts for Gateway. In 2019, the space agency awarded contracts to Maxar and Northrop Grumman to build the Power and Propulsion Element (PPE) and Habitation and Logistics Outpost (HALO), respectively. As the name suggests, the PPE will feature an exceptionally large ~50 kW solar array and the most powerful electric thrusters ever flown in space, thus supplying Gateway with electricity and propulsion. HALO is a miniscule habitat module also responsible for life support and providing all other basic necessities for astronauts to live in space, all of which will leave a tiny amount of actual habitable volume for those astronauts to live in.
Most recently, NASA also awarded SpaceX a contract to develop a new Dragon XL spacecraft that will launch on Falcon Heavy and autonomously resupply the lunar space station at least twice, should Gateway actually make it to launch.
The notional plan is to eventually expand the habitable volume of the station from living in a large SUV to something more like a small studio apartment, a bit less than a third as large as the International Space Station (ISS) in a best-case scenario. The ISS is designed to support at least six astronauts simultaneously and has done so for almost two decades, albeit only with the help of resupply missions launched from Earth every 2-3 months. Indeed, the plan is to send up to four astronauts to the Gateway for no more than 90 days a year.
Two birds, one stone; two eggs, one basket
Originally, NASA wanted to launch the PPE and HALO modules – together representing the absolute bare minimum needed to build a functional Gateway – on separate commercial rockets in 2022 and 2023, respectively. Now, according to NASA associate administrator Doug Loverro, the space agency has made the decision to launch both modules simultaneously on the same commercial rocket.
This decision was made in large part because it makes sense from a technical simplicity and overall efficiency standpoint but also because several commercial launch vehicles – either currently operational or soon to be – are set to debut extremely large payload fairings. As a combined payload, the Gateway PPE and HALO modules would be too big for just about any existing launch vehicle, while the tiny handful it might fit in lack the performance needed to send such a heavy payload to the Moon.
Falcon Heavy apparently has the performance needed, as NASA used the rocket and a new stretched fairing developed by SpaceX for military customers as a baseline to determine whether PPE and HALO could launch together. Given that NASA could have technically used any of the vehicles expected to have large payload fairings for that analysis, the explicit use and mention of Falcon Heavy rather strongly suggests that the SpaceX rocket is a front runner for the new combined launch contract. This isn’t exactly surprising, given that the massive rocket has already completed three successful launches and will attempt at least another four missions between now and 2023.
Of the other launch vehicles expected to feature large fairings capable of supporting the combined PPE/HALO payload, ULA’s Vulcan Centaur rocket is scheduled to launch for the first time in July 2021, while Blue Origin’s New Glenn is unlikely to launch before late 2021. Northrop Grumman is also developing the Omega rocket with a large fairing, although it’s unlikely to have the performance needed for the unique Gateway payload. As such, by 2023, Falcon Heavy will almost certainly have a record of launches well out of reach of other prospective PPE/HALO launch competitors. For obvious reasons, putting both modules of a space station on a single launch raises the stakes, making it more critical than ever than risk be reduced where it can be – especially important for launch operations.
Notionally including Gateway’s PPE and HALO, Falcon Heavy now has as many as nine launches on contract (or nearly so) over the next five or so years. It’s extraordinarily unlikely that any of Falcon Heavy’s prospective competitors will be able to get close to the SpaceX rocket’s flight history by 2023, effectively making Falcon Heavy the de facto choice for NASA from an apolitical, technical perspective.
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
