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High winds scrub SpaceX Starship SN9’s Monday launch attempt

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Update (2:30 pm CST): SpaceX appears to have called off Monday’s Starship SN9 launch attempt due (primarily) to high winds along the flight corridor. Additional opportunities are available from 8 am to 6 pm CST (UTC-6) on Tuesday (Jan 26) and Wednesday (Jan 27).

Technically, lacking any official confirmation, there’s still a chance of a launch attempt or additional ground testing happening today but either possibility is extremely unlikely at this point.

Update: SpaceX has completed what is known as a Flight Readiness Review (FRR) and determined that Starship prototype SN9 is ready to attempt its first high-altitude launch as early as today.

All necessary aviation and maritime notices and restrictions are in place and the company has begun the process of closing a public highway and clearing the launch site of employees. Today’s (Jan 25) launch window lasts from noon to 6 pm CST (UTC-6) and Starship SN9 could likely be made ready to launch anytime after 2pm be ready to fly as early as 4 pm CST according to a loudspeaker announcement at the launch pad. Stay tuned for updates and, hopefully, an official SpaceX webcast.

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All signs point to SpaceX’s second high-altitude Starship prototype preparing for a 12.5-kilometer (~40,000 ft) as early as Monday, January 25th in a bid to rectify a last-second bug that caused its predecessor to explode last month.

Known as Starship serial number 8 (SN8), the SpaceX-built prototype was the first to have its basic airframe (tank and nose sections) fully integrated, as well as the first Starship to attempt to break the 150m (~500 ft) ceiling set by Starhopper, SN5, and SN6. Break the ceiling SN8 most certainly did, performing a spectacularly successful 12.5 km launch that aced almost every single goal SpaceX had hoped to complete. Keyword almost.

After an impressive 280 seconds of uninterrupted operation of its Raptors, Starship SN8 shut down the last of those three engines, flipped onto its belly, and successful freefell ~12 kilometers back to Earth. The rocket then carried that success even further, reigniting two Raptors, performing a dramatic 120-degree flip, orienting itself vertically, and beginning to slow down for a soft landing.

Only then did Starship SN8’s performance deviate from virtual perfection. At T+6:38, a few seconds after beginning its crucial landing burn, one of Starship’s active Raptors shut down and the other effectively stopped generating thrust. The reason, CEO Elon Musk would later explain, was low head pressure in a smaller tank (‘header tank’) dedicated to supplying fuel during Starship’s wild flip and landing maneuver. It was never confirmed if the Raptor engine shutdown observed milliseconds prior to the other engine losing thrust was intentional.

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Cause aside, the end result was unsurprising: without enough thrust to slow down, Starship SN8 accurately impacted the concrete landing zone but did so at high speed – likely around 50-60 m/s (100-150 mph). Given that Starhopper and Starships SN5 and SN6 had already successfully proven Starship’s ability to gently land from 150 meters on a single Raptor engine and that, prior to SN8, Starship’s bizarre belly-flop descent and 90-degree flip had been almost entirely theoretical, SpaceX deemed the launch a spectacular success.

Nothing better exemplifies that than the fact that a little over a month later, SpaceX quite literally began scrapping the most complex, completed section of a future Starship prototype (SN12) before it ever reached the assembly phase. Instead, SpaceX appears to be more focused than ever on a mysterious series of “major” upgrades Musk has said will debut on Starship SN15. Nearly all SN15 subsections have been completed and are simply waiting to be joined together, while parts of SN16 and SN17 are also starting to pile up in staging areas.

Starship SN10 is practically ready to move to the launch pad to prepare for flight as soon as SpaceX chooses to do so and Starship SN11 is likely no more than a week or two of work away from reaching same level of readiness.

Ultimately, despite a long and delay-ridden test campaign, Starship SN9 finally completed what looked like a full-duration static fire of all three of its Raptor engines – the rocket’s sixth static fire overall. On Saturday, January 23rd, SpaceXers installed SN9’s flight termination system (FTS) – a system of explosives designed to destroy Starship if it flies too far off course. For Starship, FTS installation all but guarantees that a launch attempt is a matter of days away. Fresh county roadblocks, Temporary Flight Restrictions (TFRs) granted by the FAA, and Coast Guard a safety notice further imply that SN9 will attempt to launch as early as Monday morning, January 25th, with backup opportunities on Tuesday and Wednesday.

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With any luck, like SN8’s high-altitude debut, SpaceX hopefully livestream Starship SN9’s own attempt at the same feat. Stay tuned for more details as they come.

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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Tesla already has a complete Robotaxi model, and it doesn’t depend on passenger count

That scenario was discussed during the company’s Q4 and FY 2025 earnings call, when executives explained why the majority of Robotaxi rides will only involve one or two people.

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Credit: @AdanGuajardo/X

Tesla already has the pieces in place for a full Robotaxi service that works regardless of passenger count, even if the backbone of the program is a small autonomous two-seater. 

That scenario was discussed during the company’s Q4 and FY 2025 earnings call, when executives explained why the majority of Robotaxi rides will only involve one or two people.

Two-seat Cybercabs make perfect sense

During the Q&A portion of the call, Tesla Vice President of Vehicle Engineering Lars Moravy pointed out that more than 90% of vehicle miles traveled today involve two or fewer passengers. This, the executive noted, directly informed the design of the Cybercab. 

“Autonomy and Cybercab are going to change the global market size and mix quite significantly. I think that’s quite obvious. General transportation is going to be better served by autonomy as it will be safer and cheaper. Over 90% of vehicle miles traveled are with two or fewer passengers now. This is why we designed Cybercab that way,” Moravy said. 

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Elon Musk expanded on the point, emphasizing that there is no fallback for Tesla’s bet on the Cybercab’s autonomous design. He reiterated that the autonomous two seater’s production is expected to start in April and noted that, over time, Tesla expects to produce far more Cybercabs than all of its other vehicles combined.

“Just to add to what Lars said there. The point that Lars made, which is that 90% of miles driven are with one or two passengers or one or two occupants, essentially, is a very important one… So this is clearly, there’s no fallback mechanism here. It’s like this car either drives itself or it does not drive… We would expect over time to make far more CyberCabs than all of our other vehicles combined. Given that 90% of distance driven or distance being distance traveled exactly, no longer driving, is one or two people,” Musk said. 

Tesla’s robotaxi lineup is already here

The more interesting takeaway from the Q4 and FY 2025 earnings call is the fact that Tesla does not need the Cybercab to serve every possible passenger scenario, simply because the company already has a functional Robotaxi model that scales by vehicle type.

The Cybercab will handle the bulk of the Robotaxi network’s trips, but for groups that need three or four seats, the Model Y fills that role. For higher-end or larger-family use cases, the extended-wheelbase Model Y L could cover five or six occupants, provided that Elon Musk greenlights the vehicle for North America. And for even larger groups or commercial transport, Tesla has already unveiled the Robovan, which could seat over ten people.

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Rather than forcing one vehicle to satisfy every use case, Tesla’s approach mirrors how transportation works today. Different vehicles will be used for different needs, while unifying everything under a single autonomous software and fleet platform.

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Tesla Cybercab spotted with interesting charging solution, stimulating discussion

The port is located in the rear of the vehicle and features a manual door and latch for plug-in, and the video shows an employee connecting to a Tesla Supercharger.

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Credit: What's Inside | X

Tesla Cybercab units are being tested publicly on roads throughout various areas of the United States, and a recent sighting of the vehicle’s charging port has certainly stimulated some discussions throughout the community.

The Cybercab is geared toward being a fully-autonomous vehicle, void of a steering wheel or pedals, only operating with the use of the Full Self-Driving suite. Everything from the driving itself to the charging to the cleaning is intended to be operated autonomously.

But a recent sighting of the vehicle has incited some speculation as to whether the vehicle might have some manual features, which would make sense, but let’s take a look:

The port is located in the rear of the vehicle and features a manual door and latch for plug-in, and the video shows an employee connecting to a Tesla Supercharger.

Now, it is important to remember these are prototype vehicles, and not the final product. Additionally, Tesla has said it plans to introduce wireless induction charging in the future, but it is not currently available, so these units need to have some ability to charge.

However, there are some arguments for a charging system like this, especially as the operation of the Cybercab begins after production starts, which is scheduled for April.

Wireless for Operation, Wired for Downtime

It seems ideal to use induction charging when the Cybercab is in operation. As it is for most Tesla owners taking roadtrips, Supercharging stops are only a few minutes long for the most part.

The Cybercab would benefit from more frequent Supercharging stops in between rides while it is operating a ride-sharing program.

Tesla wireless charging patent revealed ahead of Robotaxi unveiling event

However, when the vehicle rolls back to its hub for cleaning and maintenance, standard charging, where it is plugged into a charger of some kind, seems more ideal.

In the 45-minutes that the car is being cleaned and is having maintenance, it could be fully charged and ready for another full shift of rides, grabbing a few miles of range with induction charging when it’s out and about.

Induction Charging Challenges

Induction charging is still something that presents many challenges for companies that use it for anything, including things as trivial as charging cell phones.

While it is convenient, a lot of the charge is lost during heat transfer, which is something that is common with wireless charging solutions. Even in Teslas, the wireless charging mat present in its vehicles has been a common complaint among owners, so much so that the company recently included a feature to turn them off.

Production Timing and Potential Challenges

With Tesla planning to begin Cybercab production in April, the real challenge with the induction charging is whether the company can develop an effective wireless apparatus in that short time frame.

It has been in development for several years, but solving the issue with heat and energy loss is something that is not an easy task.

In the short-term, Tesla could utilize this port for normal Supercharging operation on the Cybercab. Eventually, it could be phased out as induction charging proves to be a more effective and convenient option.

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Tesla confirms that it finally solved its 4680 battery’s dry cathode process

The suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.

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tesla 4680
Image used with permission for Teslarati. (Credit: Tom Cross)

Tesla has confirmed that it is now producing both the anode and cathode of its 4680 battery cells using a dry-electrode process, marking a key breakthrough in a technology the company has been working to industrialize for years. 

The update, disclosed in Tesla’s Q4 and FY 2025 update letter, suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.

Dry cathode 4680 cells

In its Q4 and FY 2025 update letter, Tesla stated that it is now producing 4680 cells whose anode and cathode were produced during the dry electrode process. The confirmation addresses long-standing questions around whether Tesla could bring its dry cathode process into sustained production.

The disclosure was highlighted on X by Bonne Eggleston, Tesla’s Vice President of 4680 batteries, who wrote that “both electrodes use our dry process.”

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Tesla first introduced the dry-electrode concept during its Battery Day presentation in 2020, pitching it as a way to simplify production, reduce factory footprint, lower costs, and improve energy density. While Tesla has been producing 4680 cells for some time, the company had previously relied on more conventional approaches for parts of the process, leading to questions about whether a full dry-electrode process could even be achieved.

4680 packs for Model Y

Tesla also revealed in its Q4 and FY 2025 Update Letter that it has begun producing battery packs for certain Model Y vehicles using its in-house 4680 cells. As per Tesla: 

“We have begun to produce battery packs for certain Model Ys with our 4680 cells, unlocking an additional vector of supply to help navigate increasingly complex supply chain challenges caused by trade barriers and tariff risks.”

The timing is notable. With Tesla preparing to wind down Model S and Model X production, the Model Y and Model 3 are expected to account for an even larger share of the company’s vehicle output. Ensuring that the Model Y can be equipped with domestically produced 4680 battery packs gives Tesla greater flexibility to maintain production volumes in the United States, even as global battery supply chains face increasing complexity.

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