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SpaceX posts uncut Falcon 9 launch and landing footage and audio
SpaceX has released uncut footage of one of its most recent Falcon 9 launches and landings, including unprecedented onboard audio from the rocket through all phases of flight.
The rocket in question, Falcon 9 booster B1059, ended months of delays when it lifted off at long last on August 30th, sending a new upper stage, payload fairing, and an Argentinian Earth observation satellite on their way to orbit. Known as SAOCOM 1B, the second of a pair of synthetic aperture radar satellites launch by SpaceX deployed from Falcon 9 less than 15 minutes after liftoff, followed by two rideshare payloads roughly 45 minutes later.
Booster B1059 separated from the rest of Falcon 9 a little over two minutes after launch and quickly flipped around to perform a boostback burn – quite literally slowing down to zero from Mach 5 and then boosting several dozen miles back towards the Florida coast. The rocket ended its fourth launch with a gentle landing at Landing Zone-1, effectively completing a ~200 km (~120 mi) aerial journey in less than eight minutes with an average velocity substantially faster than the speed of sound.
In the booster camera video SpaceX unexpectedly released after mission completion, one thing stands out above all else: an uninterrupted audio recording of the rocket from liftoff to landing. In the past, SpaceX has occasionally released the odd video from a Falcon 9 booster’s onboard camera, the most recent instance of which was published in 2016. In one other memorable case, SpaceX’s April 2018 launch of NASA’s TESS exoplanet observatory was blessed with uncut booster camera footage during the live webcast. SpaceX never technically released that footage on its own but it was easy enough to cut it from the webcast to offer a clean, uninterrupted view of a Falcon 9 booster launch and landing.
Regardless, in all prior instances and webcasts with booster camera footage, SpaceX has never included audio. It’s generally understood that most modern launch vehicles – including Falcon 9 – are outfitted with numerous high-fidelity microphones. Unintuitively, multiple separate, time-synchronized audio recordings can be used to quite literally triangulate the source of rocket hardware issues in the event of a failure – a technique SpaceX has used to its benefit to investigate Falcon 9’s first in-flight failure in 2015.
In this case, the audio serves no technical purpose but does offer the best birds-ear perspective of a Falcon 9 launch yet published. Roughly sped up by a factor of four, SpaceX’s SAOCOM 1B audio captures the passenger jet-esque whine of Falcon 9’s Merlin 1D turbopumps, the brief silence of engine cutoff, the whistle and vibration of atmospheric reentry, the thump of cold-gas thrusters maintaining the rocket’s attitude in vacuum, and even the clunk of landing leg deployment, among many other notable sounds.
Thanks to a relatively gentle and low-energy landing as a result of the low Earth orbit required by SAOCOM 1B, Falcon 9 B1059 will likely be turned around for a fifth launch and landing in the very near future. The booster may even have a shot at breaking SpaceX’s rocket turnaround record – currently held by Falcon 9 B1058 with two launches just 51 days apart.
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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
