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SpaceX’s Starship rocket just took a big leap towards orbit with latest test success

Starship has passed the most significant milestone in the history of the ambitious launch vehicle. (NASASpaceflight - bocachicagal)

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A full-scale Starship rocket has passed a critical test for the first time ever, strongly suggesting that the next-generation launch vehicle could be much closer to orbital readiness than most would imagine.

To be clear, a huge amount of work remains before Starship can be deemed anywhere close to its first orbital flight tests, not the least of which is the fabrication and assembly of the first massive Super Heavy booster(s). However, after Starship SN4’s latest successful May 9th test, it’s hard to see any apparent showstoppers that can’t be handled with a combination of fairly routine testing and iterative progress, as well as time and money. There is certainly room for improvement throughout the program but SpaceX has effectively demonstrated that the biggest practical concerns about its approach to Starship are moot.

Captured live on May 9th and 10th by local resident and photographer Mary (bocachicagal) with the help of NASASpaceflight.com, SpaceX worked for about two days to reconfigure its fourth full-scale Starship prototype after two successful Raptor engine static fires and prepare it for a different kind of test. That work mainly involved removing said Raptor and replacing it with a hydraulic ram stand used to simulate the thrust of 1-3 engines without actually needing to perform a static fire test, further allowing SpaceX to simulate much longer engine operations than its spartan test pad could survive. Around 9pm CDT on May 9th (02:00 UTC, May 10), Starship SN4’s latest trial began.

Known as a cryogenic pressure and load test, it differed from a prior “cryo proof test” completed on April 26th, in which Starship was fully loaded with liquid nitrogen (more than twice as cold as dry ice), pressurized to a bit less than 5 bar (~70 psi), and stressed with hydraulic rams. About a week later, after installing a Raptor engine on a full-scale Starship prototype for the first time ever, Starship SN4 fired up said engine on May 5th – another historic first for the next-generation launch vehicle. 30 hours later, SpaceX performed another wet dress rehearsal (WDR) with liquid methane and oxygen and fired up Starship’s Raptor engine again.

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After about 48 hours of reconfiguration, SpaceX moved on to a much more serious cryogenic test. As noted by CEO Elon Musk, the 4.9 bar the rocket previously reached was accepted as enough to perform a Raptor static fire test and possibly enough for a low-stress, low-altitude flight test to ~150m (500 ft). For orbital flight, however, Starship needs to withstand a minimum of 6 bar (~90 psi), while 8.5 bar (125 psi) is preferable to give the rocket the 1.4x safety factor optimal for human spaceflight.

This time, SpaceX – having successfully gathered data from two static fire tests and several wet dress rehearsals – was ready to risk Starship SN4 and pressurized it all the way to 7.5 bar (~110 psi). While ~12% shy of minimum human spaceflight standards, Starship SN4 successfully reached and maintained 7.5 bar while the ship stressed with hydraulic rams to simulate the thrust of three Raptor engines, all of which it survived fully intact. What 7.5 bar does offer, however, is a 1.25x safety factor – on the higher end of aerospace industry standards for uncrewed orbital spaceflight (i.e. cargo/satellite launches).

If Starship can reliably sustain tank pressures of 7.5 bar, the ship’s structure is effectively ready for orbital flight. (SpaceX)

Ready for orbit?

Technically, this means that – pending much additional testing and verification with different serial prototypes and (likely) higher pressures – Starship’s stainless steel structure is effectively qualified for uncrewed orbital launches. Of course, reality is much more complex. To actually perform and survive orbital flights, SpaceX will first need to build and similarly qualify the first Super Heavy boosters and ensure that those unprecedentedly large rockets can survive and sustain ~20-30 Raptor engines firing simultaneously.

Super Heavy’s Raptor count has been reduce to 31 engines but that quantity will still give it the most of any rocket booster in history. (SpaceX)

Aside from Super Heavy, it’s unknown if SpaceX has begun testing Raptor engines at the durations they will need to burn to booster Starships into orbit (TBD; likely 5-10 minutes of continuous operation). Along those lines, SpaceX also needs to build, test, and qualify Raptor’s vacuum-optimized sibling to complement the sea level version’s smaller, less-efficient nozzle. Still, Musk has already revealed that RaptorVac could be a matter of weeks from its first static fire and rocket engine development – while incredibly challenging – is more of a known quantity for SpaceX.

Perhaps the most important unknown is whether SpaceX’s recent May 2020 WDRs and static fires have used autogenous pressurization, a more efficient method of pressurizing rockets by using hot gas generated by their own engines. It’s extremely likely that SpaceX has been autogenously pressurizing Starship SN4 for its recent tests, but if that weren’t the case, it would be a big source of schedule uncertainty without significant redesign work.

Ultimately, SpaceX appears to have proven that orbital-class rockets can be built cheaply out of commodified steel in extraordinarily spartan production facilities. Many, many challenges remain but the biggest uncertainty and hurdle facing SpaceX’s Starship program and ambitions is well on its way to being fully put to rest.

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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 cryptic X post was related to SpaceX, not TSLA stock

Musk shared his update in a post on social media platform X.

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Joel Kowsky, Public domain, via Wikimedia Commons

Elon Musk has confirmed that a cryptic post he shared earlier this month was related to his private sale enterprise, SpaceX, not electric vehicle maker Tesla. 

Musk shared his update in a post on social media platform X. 

Musk’s cryptic post

Earlier this month, the CEO posted the cryptic words “You’ll Thank Me Later” on X. The post quickly gained attention on social media, as Tesla watchers and Elon Musk fans speculated on what the words could mean. With the announcement that Musk has purchased $1 billion of TSLA stock in the open market, some speculated that the cryptic post was a teaser of sorts to shareholders.

Musk’s massive TSLA purchase was the biggest in history, and it also stood as a notable vote of confidence for the company as it attempts to enter a new era led by robots, AI, and autonomous driving. This was likely one of the reasons why Tesla stock saw a notable rise on Monday’s trading. In another post, however, Musk confirmed that his cryptic post was not in any way related to his stock purchase.

All SpaceX

Considering that all the words in Musk’s post started with an uppercase letter, some space fans immediately speculated that the CEO was teasing something related to SpaceX. The company’s three drone ships, Just Read the Instructions (JRTI), Of Course I Still Love You (OCISLY), and A Shortfall of Gravitas (ASOG), after all, follow similar naming styles. 

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This was one of the reasons why some TSLA shareholders noted on X that Musk’s post was likely SpaceX-related. In response to one of these comments, Musk stated that these speculations are “Correct.”

The only question now is what exactly Musk was referring to in his post. Perhaps the CEO really was hinting at the name of the drone ship that will be tasked to retrieve Starship in the middle of the ocean.

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Tesla Model Y leads as weekly registrations in China hit Q3 high

Out of Tesla China’s 15,350 registrations, the Model Y once again accounted for the majority.

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Credit: Tesla China

Tesla recorded 15,350 insurance registrations in China during the week of September 8–14, marking a 7.3% increase compared to the prior week. The figure also represents the highest weekly result so far in the third quarter of 2025.

Model Y still leads demand

Out of the 15,350 registrations, the Model Y once again accounted for the majority. Data shows 9,460 registrations for the standard Model Y, complemented by 1,030 units of the newly launched extended wheelbase, six-seat Model Y L. Tesla also logged 4,860 Model 3 sedans for the week as well, as noted in a CNEV Post report.

The Model Y L, which debuted in late August, registered a modest uptick from the 900 registrations it saw the week before. Volumes remain relatively low, suggesting that the variant will not meaningfully change Tesla’s third-quarter sales trajectory. That being said, Tesla China’s previous comments about the Model Y L’s demand suggest that an uptick in registrations may be coming in the next weeks.

The ramp of the Model Y L will likely be a notable topic among Tesla watchers, as its ramp will still be quite a task despite the vehicle being just a new variant of the all-electric crossover. With this in mind, meaningful numbers of Model Y L registrations may hit their pace in the next quarter instead.

Tesla China’s momentum

As per data from the China Passenger Car Association (CPCA), Tesla’s retail sales in August 2025 totaled 57,152 units. That figure marked a 9.9% decline from August 2024’s 63,456 units, but a significant 40.7% increase from July’s 40,617 deliveries.

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Quarter-to-date, Tesla China’s results show a 34.4% gain compared to the previous quarter but remain down 11% year-over-year. Year-to-date, Tesla is down about 7% in China versus the same period in 2024. With only a couple more weeks before the end of the third quarter, Tesla China’s registrations may help determine whether the company could catch up to its 2024 numbers this year. 

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Tesla Supercharger access has proven to be a challenge for one company

Interestingly, it seems to be the Volkswagen brand specifically that is having issues with compatibility with Tesla Superchargers. Other brands under the VW umbrella, like Audi and Porsche, have already gained access to the charging network.

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Credit: MarcoRP | X

Tesla Supercharger access has proven to be quite the challenge for one company, as it continues to delay the date that it will enable its owners to charge at the most expansive network in the world.

Tesla Superchargers have been opening up to other brands for well over a year, and many car companies that are manufacturing electric vehicles now have access to the vast network that has over 70,000 locations worldwide.

Tesla to launch Supercharger access for VW owners later this year

However, one brand has experienced some issues with what it is calling “technical challenges,” specifically failing to enable cross-compatibility between its vehicles and Tesla Superchargers.

Volkswagen has had to delay its ability to enable customers to charge at Superchargers because there have been some difficulties getting things to run smoothly. A report from PCMag cites a quote from a Volkswagen spokesperson who said there are still plans to deliver this year, but there have been some delays:

“Volkswagen looks forward to making it possible for ID. Buzz and ID.4 vehicle owners to gain access to the Tesla NACS Partner Superchargers. The timeline has been delayed by technical challenges, and we ask for customers’ patience. We still expect to deliver access this year.”

Interestingly, it seems to be the Volkswagen brand specifically that is having issues with compatibility with Tesla Superchargers. Other brands under the VW umbrella, like Audi and Porsche, have already gained access to the charging network.

Volkswagen EV owners will need to use an official VW adapter to access the Tesla Supercharger Network once the issues are resolved. It still plans to launch access to its owners later this year, but its spokesperson did not announce any planned timeline.

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