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SpaceX scraps Starship SN8 wreckage, clears landing zone for next launch

Although efforts were made to save the historic hardware, Starship SN8's wreckage is no more. (NASASpaceflight - bocachicagal)

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In spite of tentative plans for preservation, SpaceX has fully scrapped the wreckage of the first high-altitude Starship prototype, clearing the landing zone it impacted for its successor’s imminent launch debut.

Known as serial number 8 or SN8, the Starship prototype was the first of any kind to fly beyond 150 meters (~500 ft), reaching an altitude of 12.5 km (~7.8 mi) on December 9th during its breathtaking launch debut. In an unexpected twist, SpaceX kept Starship SN8’s thrust to weight ratio as low as possible, stretching what could have been a two or three-minute test into an almost seven-minute ordeal with three consecutive Raptor engine cutoffs during the ascent.

At apogee, SN8 used cold gas thrusters to flip into a belly-down orientation and free-fell ~95% of the way back to Earth before igniting two of its three Raptor engines, performing a wild powered flip back into a vertical landing position and nearly securing a soft landing. Unfortunately, around 10-20 seconds before that planned landing, what Musk later described as low methane header tank pressure starved the Starship’s engines of fuel and more or less cut all appreciable thrust, causing SN8 to reach its landing zone traveling about 40 m/s (~90 mph) too fast. The rocket impacted the concrete pad, crumpled, and exploded.

By all accounts, success was one of the less likely outcomes SpaceX expected from SN8’s high-altitude debut, with Musk himself estimating the odds of total success to be just 33%. Additionally, Starship SN8 effectively made it all the way to a low-speed landing regime that Starships SN5 and SN6 all but flawlessly demonstrated with back-to-back 150m hops and landings in August and September 2020.

The beginning and end of Starship SN8’s highly successful but ill-fated launch debut. (Richard Angle)

In other words, despite the explosive end, SN8’s high-altitude launch debut was a spectacular success for SpaceX’s Starship program – possibly even preferable to a perfect landing given that it uncovered an unexpected issue with fuel tank pressurization. Beyond the landing failure, the Starship checked every single box on SpaceX’s test flight list, successfully debuting multiple Raptors, demonstrating multiple in-flight engine shutdowns and engine relights; proving that an unprecedented ‘skydiver-style’ landing maneuver is possible and viable; and successfully testing Starship’s ability to control itself in that bellyflop orientation with thrusters and four massive flaps.

Speaking in a recent interview with Ars Technica, in the words of pragmatic SpaceX COO and President Gwynne Shotwell, SN8’s launch debut “de-risked [the Starship] program pretty massively.” According to Musk, SpaceX engineers were quickly able to determine why Starship SN8’s methane header tank was unable to maintain the fuel flow (pressure) needed for Raptor’s landing burn(s) and quickly implemented a solution.

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Thanks to a quick, temporary fix, Starship SN9’s own 12.5 km launch debut remains on track to despite SN8’s failed landing. (NASASpaceflight – bocachicagal)
SN9 appeared to complete a cryogenic proof test on December 29th and could attempt its first static fire as early as January 6th. (NASASpaceflight – bocachicagal)

Instead of pressurizing autogenously with methane gas, Starship SN9 will use helium to pressurize its fuel header tank, serving as a temporary fix while SpaceX determines what changes need to be made to get rid of that helium crutch. Landing pad now cleared of Starship remains and SN8’s impact crater more or less repaired, the only thing standing between Starship SN9 and its own 12.5 km launch debut is a triple-Raptor static fire test. Originally expected as early as January 4th, SpaceX never made it more than a few minutes into the attempt, while a backup window on January 5th was canceled later that evening. The test could now occur no earlier than (NET) Wednesday, January 6th.

Although SpaceX couldn’t fully salvage SN8’s nosecone wreckage, it did snag a mostly intact flap before scrapping the rest. (NASASpaceflight – bocachicagal)

Thankfully, although SpaceX was unable to save the entirety of Starship SN8’s wrecked nose section, the company did manage to extract a largely intact nose flap. The rest of the remains were scrapped on site and trucked away but it’s possible that certain significant components of SN8 – particularly the recovered flap – will eventually find themselves on display at one or more SpaceX facilities.

Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Elon Musk confirms Tesla AI6 chip is Project Dojo’s successor

Tesla’s AI5 and AI6 chips are expected to be rolled out to the company’s consumer products.

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Credit: Tim Zaman/Twitter

Earlier this week, reports emerged stating that Tesla has stepped back from its Project Dojo initiative. While the reports were initially framed as a negative development for the electric vehicle maker’s autonomous driving efforts, CEO Elon Musk later noted on X that Tesla was indeed halting its Dojo initiative.

Elon Musk’s Confirmation

As per Musk, Tesla was shuttering Project Dojo because it does not make sense for the company to divide its resources and scale two different AI chip designs. Dojo, after all, is designed to train the company’s autonomous driving program, and thus, it would not be rolled out to Tesla’s consumer products.

In a series of posts on X, Musk stated that it would make sense to just use Tesla’s AI5/AI6 to train its FSD and Autopilot systems. “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 said.

Tesla’s AI5 and AI6 chips are expected to be rolled out to the company’s consumer products, from Optimus to the Cybercab to the next-generation Roadster.

AI6 is Dojo’s Successor

What was particularly interesting about Musk’s comment was his mention of using AI5/AI6 chips for training. As per Musk, this strategy could be seen as “Dojo 3” in a way, since the performance of Tesla’s AI5 and AI6 chips is already notable. Musk’s comment about using AI6 chips for training caught the eye of many, including Apple and Rivian alumnus Phil Beisel, who noted that “AI6 is now Dojo.”

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“Dojo is Tesla’s AI training supercomputer, built around a custom chip known as the D1. The D1 and AI5/AI6 share many core design elements, particularly the math operations used in neural networks (e.g., matrix multiplication) and highly parallel processing.

“Dojo had a unique feature: chips arranged in a 5×5 grid using a system-on-wafer design, with etched interconnects enabling high-speed data transfer. In a sense, Dojo will live on as the generalized AI6. Going forward, all efforts will focus on AI6,” the tech veteran wrote in a post on X.

Elon Musk confirmed the Apple alumnus’ musings, with the CEO responding with a “bullseye” emoji. Musk is evidently excited for Tesla’s AI6 chip, which is expected to produced by Samsung’s upcoming Texas fabrication facility. In a post on X, Musk stated that he would personally be walking Samsung’s line to accelerate the output of Tesla’s AI6 computers.

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Cybertruck

Tesla’s new upgrade makes the Cybertruck extra-terrestrial

The upgrade was announced by the electric vehicle maker on social media platform X.

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Credit: Tesla

It took a while, but the Tesla Cybertruck’s rock sliders and battery armor upgrades have finally arrived. The upgrade was announced by the electric vehicle maker on social media platform X, to much appreciation from Cybertruck owners.

Tesla Releases Cybertruck Armor Package

As could be seen in Tesla’s official Shop, the Cybertruck Terrestrial Armor Package is available only for Foundation Series units for now, though non-Foundation Series vehicles should have access to the upgrade around September 2025. Price-wise, the armor package is quite reasonable at $3,500.

For that price, Cybertruck owners would be able to acquire enhanced rock sliders and an underbody battery shield that should allow the all-electric pickup truck to go through harsh terrain without any issues. Each purchase of the Terrestrial Armor Package includes 1 Underbody shield, 1 Left side structural rocker, and 1 Right side structural rocker.

Most importantly, the Armor Package’s price includes shipment to the customer’s preferred Tesla Service Center and installation.

Extra-Terrestrial

Tesla describes its Cybertruck Armor Package as follows: “Get extra-terrestrial. The Cybertruck Terrestrial Armor Package includes enhanced rock sliders and an underbody battery shield to provide greater protection from rocks and debris when off-roading on tough terrain. The rock sliders are constructed from coated steel and the underbody battery shield is constructed from aluminum for greater protection against scraping.”

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Initial impressions from a Cybertruck owner who was fortunate enough to test the Armor Package in real-world off-road conditions have been positive. The item’s pricing also seems to be quite appreciated by Cybertruck owners in forums such as the Cybertruck Owners Club, with some members stating that they would be acquiring the package for their own all-electric pickup trucks.

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Tesla Model Y L reportedly entered mass production in Giga Shanghai

The vehicle is expected to be a larger version of the best-selling Model Y crossover.

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Credit: Tesla Asia/X

Reports from industry watchers in China have suggested that the Tesla Model Y L has started mass production at Gigafactory Shanghai. The vehicle is expected to be a larger version of the best-selling Model Y crossover, offering three rows and six seats thanks to a longer wheelbase.

Tesla Model Y L Production Rumors

Reports about the new Model Y variant’s alleged milestone were initially shared on Weibo, with some industry watchers stating that the vehicle has already started mass production. Tesla China is reportedly surveying which of its domestic stores would have the first display units of the six-seat Model Y. 

The Model Y L’s steady march towards production was evident this past week, with recent reports indicating that the vehicle’s key specs have already been listed in the China Ministry of Industry and Information Technology’s (MIIT) latest batch of new energy vehicle models that are eligible for vehicle purchase tax exemptions.

As per the MIIT’s list, the Model Y L will be a dual motor vehicle that is equipped with an 82.0-kWh lithium-ion battery from LG Energy Solution. The vehicle will feature six seats with two captain seats on the second row, as well as a CLTC range of 751 km. 

Tesla Model Y L Potential

The potential of the Model Y L is vast, considering that it is produced in the existing Model Y lines of Tesla’s factories. This should slash new vehicle tooling costs and potential ramp-up issues. Three-row SUVs also command a pretty notable market that has mostly only been accessed by the more expensive Model X. With the Model Y L’s lower price, Tesla could become more competitive in the three-row SUV segment.

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As noted by longtime Tesla owner and investor @_SFTahoe, the Model Y L could also become a more premium option for the company’s Robotaxi business, thanks to its second row captain seats and spacious interior. The expansion of Model Y L Robotaxis should also be impressive considering Tesla’s mastery of mass manufacturing techniques. 

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