

News
SpaceX preps Texas Starship’s second tank dome for installation in latest milestone
During an August 4th visit to SpaceX’s Boca Chica Starship build site, CEO Elon Musk captured and shared photos showing technicians carefully flipping the second of three propellant tank domes destined for installation inside the company’s South Texas orbital Starship prototype.
This is the latest visible step towards the completion of one of SpaceX’s two “Mk 1” Starships, said by Elon Musk to be the first orbit-capable prototypes. Per recent tweets, either or both of the prototypes – being built concurrently at separate sites in Florida and Texas – could be ready for their first flight tests as early as September or October 2019.
Set to be powered by up to three sea-level (SL) Raptors and three vacuum-optimized Raptors (RVacs), Musk has stated that SpaceX’s first two orbital Starship prototypes will likely begin flight testing with just the three SL engines installed. Recently, the SpaceX CEO did, however, indicate that development of Raptor’s vacuum variant – postponed as of a September 2018 update – had been reprioritized and said that it could actually be ready sooner than later.
Raptor Vacuum will have a significantly larger nozzle compared to the sea level engine it will be based on. According to Musk, RaptorVac will have a nozzle diameter of roughly 2.8m (9.2 ft), while the SL Raptor features a ~1.3m (4.2 ft)-diameter nozzle. With a larger diameter nozzle, a chemical rocket engine can technically generate more thrust and is significantly more efficient due to an increased expansion ratio, meaning the difference in the diameter of the nozzle exit and combustion chamber throat.
In the very simplest sense, this efficiency and thrust increase comes from the fact that a longer nozzle allows the exiting gas (reaction mass) to reach a higher velocity, thus conveying more momentum onto the rocket it is propelling.
Starship’s Raptor engines, of course, use liquid methane as fuel and liquid oxygen as their oxidizer. According to SpaceX, fully fueling a combined Super Heavy and Starship stack will require an incredible ~5000 tons (11 million pounds) of propellant – ~1500 tons for Starship and ~3500 tons for Super Heavy.
To contain such a huge amount of fuel and oxidizer, Starship (and Super Heavy) must effectively be turned into extremely mass-efficient pressure vessels, capable of supporting something like 20 kilograms of propellant with every kilogram of rocket structure.
SpaceX’s installation of bulkheads in the Texas Starship prototype are thus an inherent indication that the rocket is being readied to play the role of a massive, ultra-strong pressure vessel. While sitting vertically, a fueled Starship’s tank domes will be subjected to immense pressures and forces from the sheer weight of the liquid oxygen and methane held above them.
Additionally, the rearmost dome will likely be partially or fully integrated into Starship’s thrust structure, meaning that it will simultaneously be subjected to the thrust of 3-6 Raptors (as much as 600-1200 tons of thrust) and the gravity of 300 metric tons of methane. It’s unclear if SpaceX is planning to reinforce Starship and Super Heavy tank bulkheads with structural add-ons, but it’s safe to assume that some level of reinforcement will be required.
SpaceX CEO Elon Musk’s planned August 24th presentation on Starship and Super Heavy will likely (hopefully) provide some new details on the structure and general design of the company’s advanced, next-generation rocket.
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Tesla’s little-known secret about its Diner might be the best feature of all
Tesla is not letting its servers go untipped, it’s taking care of that for its employees on its own.

Tesla’s Supercharger Diner in Los Angeles has a little-known secret, and in all honesty, it might be the best part of the entire thing.
Tesla opened its Supercharger Diner earlier in June, and in its first week of operation, it has done nothing but garner attention from fans, food critics, and general onlookers who are surprised to see the company gaining traction in the culinary space.
🚨 Awesome look at the Tesla Supercharger Diner pic.twitter.com/l5bj1kpGlo
— TESLARATI (@Teslarati) July 16, 2025
However, there is a little-known secret about the Diner that many people have not shared, and it has to do with the staff and customers.
Traditionally, restaurants in the United States do not pay their servers a normal wage. They are paid a lower hourly rate because they make most of their money through tips or gratuity. While it is sort of strange and has recently become a more controversial topic, tipping culture in the U.S. has garnered plenty of attention lately.
Many people outside the U.S. have trouble grasping the idea of tipping servers, as many believe the restaurant should pay them a livable wage and stop relying on customers to keep the employees to a point where they can live reasonably well.
In the U.S., people seem to be on board with one side or the other: tip them because the restaurant doesn’t pay them a wage, or “I’m not tipping them for doing their jobs.”
Whichever side of the argument you’re on, I think it seems reasonable to want servers to make enough money to live comfortably and expect the restaurant to take care of that.
Tesla has done just that for the staff at the Supercharger Diner, as it has been revealed that the company covers tipping. There is no option to tip the servers or wait staff; Tesla will do it for you.
Best part about Tesla Diner. pic.twitter.com/cmzovkJKCu
— Jeremy Judkins (@jeremyjudkins_) July 22, 2025
This is a great gesture by Tesla because more and more people every day seem to be against tipping in an effort to force restaurants to pay employees more money. While it seems like a good strategy at first, it only impacts the servers, while this decision does not impact the restaurant and its owners.
Tesla is taking that risk out of the equation by providing gratuity to employees through its own means.
Elon Musk
xAI, Musk Foundation helps schools near Memphis supercomputer site
Reports of xAI and the Musk Foundation’s work were recently posted by local news media.

Elon Musk’s artificial intelligence startup xAI and the Musk Foundation have been supporting Memphis-Shelby County Schools with HVAC repairs and facility upgrades, while also funding youth programs for students in the area.
Reports of xAI and the Musk Foundation’s work were recently posted by local news media.
xAI’s school visits lead to facility repairs
Representatives from xAI visited John P. Freeman Optional School, Fairley High School, and Westwood High School, all of which are located near its Colossus supercomputer site, to assess HVAC systems, plumbing, gym facilities, and athletic fields. The visits resulted in a list of priority repairs, some of which were completed in April and May.
In addition to the repairs, xAI also shared a number of initiatives that are planned for students in the area, as stated in a Commercial Appeal report.
“xAI is working on providing STEM workshops for local students, donating equipment to technical training programs, and supporting job fairs to boost employment opportunities. These initiatives reflect xAl’s commitment to fostering education and economic growth in Memphis,” xAI noted in a statement.
Musk Foundation donation
Apart from xAI, the Musk Foundation also donated $350,000 to the Boys & Girls Clubs of Greater Memphis, enabling the reopening of two club sites located at Booker T. Washington High School and Westwood High School. Both locations had closed earlier this year due to lapses in funding. As per xAI, the Musk Foundation’s donation allows clubs to reopen for almost 1,000 students.
The donation will fund staffing, supplies, and transportation, among others. “Kids are the future of humanity,” Elon Musk said in a statement, adding that students need “every chance to shoot for the stars.”
“We’re honored to support the Boys & Girls Clubs of Greater Memphis in reopening these sites, giving kids in underserved communities the tools to build brighter futures,” Musk said.
The gift was praised by local officials, including Boys & Girls Clubs board chair Michael Garriga, who stated that the “commitment will ensure the youth of our community have the opportunities they need to develop their skills and talents to become successful students and future citizens.”
Elon Musk
What to expect from Tesla CEO Elon Musk’s new Master Plan
While Musk only shared a few tidbits about his next plan, he did hint at its theme.

Tesla CEO Elon Musk is working on another Master Plan. The executive mentioned this during the company’s second quarter earnings call earlier this week. While Musk only shared a few tidbits about his next plan, he did hint at its theme.
Master Plan Part Four
Elon Musk’s Master Plans have been a huge guiding hand for Tesla over the past couple of decades. His first Master Plan, which was published in 2006, featured a pathway towards the production of the Model 3 and energy storage systems. Master Plan, Part Deux, which was published ten years later in 2016, featured a pathway towards a Robotaxi network.
Master Plan Part 3 was more ambitious, as it presented a case towards a world where there is sustainable energy for the entire planet. Considering the scale and ambitious nature of Master Plan Part 3, it was widely speculated that Elon Musk’s next Master Plan would not be around for some time. During the second quarter earnings call, however, Musk confirmed that he is indeed creating his next big plan.
Master Plan Part 4
Elon Musk mentioned his next Master Plan when a question was asked about the work that goes on inside the Tesla Design Studio during the Q2 2025 earnings call. In response to the inquiry, Tesla Chief Designer Franz von Holzhausen emphasized that while earnings calls are not the venue for disclosing new product-related information, Tesla is working to ensure that the future remains exciting. Musk agreed, stating that there are lots of exciting things happening in the Tesla Design Studio.
“What’s going to happen over the next several years is a fundamental transformation of the company from a pre-autonomy world to a post-autonomy. And I’m working on a new Master Plan to articulate that to the Tesla team. And there will be some teething pains as you transition from a pre- autonomy to post-autonomy world, but I think the future vision for Tesla is incredibly exciting and will profoundly change the world in a good way,” Musk said.
A Post-Autonomy World
Considering Musk’s comments, it would appear that Master Plan Part 4 will be focused on a path towards what the CEO has been describing as “sustainable abundance.” If Master Plan Part 3 was focused on fostering sustainable energy for the entire planet, Master Plan Part 4 will likely present a path towards abundance in a world populated by self-driving vehicles like the Cybercab and humanoid robots like Optimus.
Master Plan Part 4 will likely have been farfetched just a couple years ago. Yet with Tesla now operating its Robotaxi service in Austin and Optimus V3 expected to enter production next year, the idea of a world filled with “sustainable abundance” does seem quite feasible. It will be ambitious like Elon Musk’s other Master Plans, of course, but it will be attainable.
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