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SpaceX’s first Super Heavy booster static fire slips to next week

Super Heavy Booster 3 could fire up one or several Raptor engines for the first time as early as Thursday, July 15th. (NASASpaceflight - bocachicagal; edits by Eric Ralph)

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Update: SpaceX has cancelled Thursday’s road closure, likely pushing Super Heavy’s first attempt at a static fire test into next week.

After an apparent false start on Wednesday morning, SpaceX has distributed a second safety alert among Boca Chica residents in anticipation of the first static fire of a Super Heavy booster as early as July 15th.

Delineated by highway and beach closures filed in advance with Cameron County, Thursday’s window stretches from 12pm to 8pm or 10pm CDT (UTC-5), giving SpaceX 8-10 hours to put the first functional Super Heavy booster prototype through its most challenging tests yet.

Known as a static fire, what is a mostly routine test for operational rockets is a bit more of a challenge for a first-of-its-kind prototype. Notably, on July 12th, Super Heavy Booster 3 survived its first ‘cryogenic proof’ pressure test, withstanding the thermal and mechanical stresses created when the rocket was filled with a few hundreds tons of liquid nitrogen and the expanding gases created as that cryogenic fluid then warmed and boiled. However, Booster 3 has yet to perform any kind of test involving the combustible, explosive liquid oxygen and methane propellant needed to fuel Raptor engines.

By all appearances, SpaceX aims to roll Super Heavy’s first wet dress rehearsal (WDR; like a ‘cryo proof’ with real propellant) and static fire into one busy day of testing. That combined WDR and static fire will likely be the first time ever that a launch vehicle as large as Super Heavy has attempted to pressurize its tanks autogenously, referring to the process of using a rocket’s own fuel and oxidizer to generate ullage gas. Starship prototypes notoriously struggled with their smaller autogenous pressurization systems – and jerry-rigged alternatives – on several occasions.

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Super Heavy booster prototype B3 survived its first major test on Monday, paving the way for a possible static fire later this week. (NASASpaceflight.com)
SpaceX has installed three Raptors on Super Heavy Booster 3 in the days shortly before and after its cryo proof. (NASASpaceflight – bocachicagal)

In other words, even an ignition-free wet dress rehearsal test completed with autogenous pressurization would be a major success and hurdle surmounted for Super Heavy. If SpaceX manages to perform the first booster WDR and static fire on the same day, it would indicate that the company has extreme confidence in Super Heavy.

Despite an aborted attempt on July 11th, SpaceX outfitted the rocket with one Raptor on Saturday, July 10th and installed another two engines in quick succession on Tuesday, July 13th – likely in an odd triangular configuration on the booster’s central nine-engine ‘thrust puck.’ Why that particular configuration was chosen instead of something more symmetric is unclear but it does decrease the odds of a multi-engine test on Super Heavy’s first static fire without a clear reason to assume that testing such an odd engine placement would provide some valuable insight.

https://twitter.com/artzius/status/1415169890521174019

In comparison, two engines on opposite sides of Super Heavy’s inner ‘ring’ or three engines forming a line across that ring are two configurations that boosters are very likely to use during landing burns. Regardless, according to Next Spaceflight’s Michael Baylor, SpaceX may start Super Heavy B3’s static fire test campaign with just one engine, so it’s not impossible that the current configuration is just a part of the incomplete process of installing five or more engines.

As with all Starship development, it’s equally likely that Super Heavy’s first wet dress rehearsal and static fire test attempts will slip late into the window, to Friday, or even to the week of July 19th. Stay tuned for updates!

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 China sales rise 48% quarter over quarter in August

The automaker sold 57,152 vehicles locally, as per data from the China Passenger Car Association (CPCA).

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Credit: Tesla Asia/X

Tesla China’s retail sales showed a rebound in August, rising 48.1% compared to May, the second month of the previous quarter, and 41% compared to July 2025. 

The automaker sold 57,152 vehicles locally, as per data from the China Passenger Car Association (CPCA), while Giga Shanghai sold 83,192 units wholesale during the month. 

Tesla’s wholesale deliveries

August 2025 marked Tesla China’s best wholesale month of 2025 so far. Giga Shanghai recorded 83,192 wholesale units in August, up 22.6% from July’s 67,886 units. Of these, 24,304 were Model 3 sedans and 58,888 were Model Ys, with 26,040 vehicles exported. 

The Model Y remained Tesla’s standout product in China, accounting for 69% of local sales and ranking as the country’s second best-selling vehicle. The brand itself was ninth among all automakers in August, which is impressive considering the company’s BEV-only lineup.

Balancing growth against year-over-year declines

While August showed strong sequential gains, Tesla’s sales in China remain 10% lower compared to the same month last year. Year-to-date, Tesla is also down 7% against 2024 levels. That being said, over the past three months, sales have grown 12.6% compared to March through May, highlighting improved momentum in the second half of the year, as per industry estimates.

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A notable portion of this momentum could very well be attributed to the introduction of the Tesla Model Y L, an extended wheelbase six-seat version of the Model Y, which also happens to be the company’s best-selling vehicle. The Model Y L’s domestic deliveries in China are already starting, so it would be interesting to see where the company’s results are in the final month of the third quarter.

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Elon Musk confirms Tesla has never shown Optimus V3 design yet

Optimus is a cornerstone of the company’s pursuit towards sustainable abundance.

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Credit: Tesla Optimus/X

Elon Musk has clarified that the next iteration of Tesla’s humanoid robot, Optimus V3, has yet to be revealed publicly. His comments were posted on social media platform on X as Tesla enthusiasts discussed recent images of Optimus V2 and V2.5. 

Musk’s comment followed a recent video shared by Salesforce CEO Marc Benioff, which showed Musk demonstrating an updated Optimus prototype equipped with Grok AI.

Updated Optimus V2

The short video posted by Benioff showed a gold-colored Optimus unit answering questions through Tesla’s Grok AI assistant and taking tentative steps. The addition of Grok suggests Tesla is seeking to integrate conversational AI directly into Optimus, expanding its potential applications beyond mechanical movement to include workplace and consumer interaction.

The Optimus in the video was quite different from the V2 units that have been showcased by the company in the past. Its hands looked more human (though they appeared to be mannequin placeholders) and its body was painted gold. In a follow-up post, the official Tesla Optimus account teased the updated design with functional hands with the caption “I’ve been working on my figure.” 

Future versions

It was then no surprise that some in the Tesla community had the impression that the refined version of the prototype featured in the new images was Optimus V3. With its more advanced hands, forearms, and sleek new paint job, after all, the unit could very well be a whole new evolution of the humanoid robot. As per Musk, however, this was not the case. 

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In a response to an X user who compared the progress of Optimus to Starship’s Raptor V1, V2, and V3 engines, the CEO clarified that Tesla has not shown Optimus V3 yet. He also noted that the new images of the humanoid robot were of Optimus V2.5. “We haven’t shown Optimus V3 yet. It is sublime. The second two images are V2 and V2.5,” Musk wrote in his response.

Optimus plays a huge role in Tesla’s future, with the robot expected to be a high-volume product that is a cornerstone of the company’s pursuit towards sustainable abundance. Elon Musk’s 2025 pay package also directly involves Optimus, with one of his targets being the delivery of 1 million Optimus robots.

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Elon Musk

SpaceX to expand Central Texas facility with $8M Bastrop project

Bastrop is already the site of several Elon Musk-led ventures.

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Credit: SpaceX

SpaceX is set to expand its presence in Central Texas with an $8 million project to enlarge its Bastrop facility, as per state filings. 

The 80,000-square-foot addition, which is scheduled to begin construction on September 24 and wrap in early January 2026, was registered with the Texas Department of Licensing and Regulation and initially reported by My San Antonio

New investment

Bastrop is already the site of several Elon Musk-led ventures. The upcoming expansion will extend SpaceX’s office at 858 FM 1209, near Starlink’s operations and The Boring Company’s facilities. Just down the road, X is housed in the Hyperloop Plaza at 865 FM 1209.

SpaceX’s expansion reflects a steady buildup of resources in Bastrop since the private space firm established its presence in the area. The addition was praised by Tesla Governor Greg Abbott, who wrote on X that the expansion will “bring more jobs, innovations and will strengthen Starlink’s impact worldwide.” 

State support

In March, Gov. Greg Abbott announced a $17.3 million state grant to SpaceX for an “expansion of their semiconductor research and development (R&D) and advanced packaging facility in Bastrop.” The project is expected to create more than 400 new jobs and generate over $280 million in capital investment.

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Following the grant award, the Texas Governor also noted that SpaceX’s facility would be growing by 1 million square feet across three years to boost its Starlink program. SpaceX’s Starlink division is among the company’s fastest-growing segments, with the satellite internet system connecting over 6 million users and counting worldwide. 

Recent reports have also indicated that Starlink has struck a deal with EchoStar to acquire 50 MHz of exclusive S-band spectrum in the United States and global Mobile Satellite Service (MSS) licenses. This should pave the way for Starlink to provide 5G coverage worldwide, even in remote areas. 

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