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SpaceX’s thin-skinned Starship ‘test tank’ passes first trial
CEO Elon Musk says that a new thin-skinned Starship ‘test tank’ just passed its first trial, taking advantage of delays to Starship SN9’s planned high-altitude launch debut.
Delayed by a lack of FAA approval for unknown reasons, Starship SN9’s 12.5-kilometer (7.8 mi) launch debut (virtually identical to SN8’s 12.5 km launch last month) is in limbo pending an “FAA review” according to Musk. SpaceX thus found itself with at least 24 hours of guaranteed inactivity for Starship SN9, time the company rapidly chose to fill with crane transportation and, more importantly, the first Starship ‘test tank’ stress test in months.
Known as Starship SN7.2, SpaceX’s latest ‘test tank’ is the third to carry the SN7 moniker and appears to have been built primarily to test refinements to the rocket’s structural design. Following test tanks SN7.0 and SN7.1, both used to qualify the use of a new steel alloy on an otherwise unchanged design, SN7.2 – likely built out of the same alloy – is instead focused on determining if SpaceX can begin trimming the margins of an increasingly mature technology.
Curiously, SN7.2 is a sort of fusion of its predecessors: combining the stout stature of SN7.0 with SN7.1’s use of an aft thrust dome, but without SN7.1’s Starship-style skirt (the three rings at its bottom). Welded directly to its black test stand, it’s unclear why SpaceX chose to give SN7.2 a thrust dome, given that the thrust of Raptor engines can only be simulated with hydraulic rams if the tank is installed on one of two Starship launch mounts.
Regardless, whether SpaceX actually tests that aspect of SN7.2, the tank’s most important task is determining if future Starships (and perhaps Super Heavy boosters) can be built out of thinner, lighter steel rings. Its domes appear to be identical to past ships but writing on the exterior of the tank strongly implied that its three rings were built out of 3mm steel rather than the 4mm sheets that have made up every Starship built in the last 12 months.
SpaceX began loading the thin-skinned tank with liquid nitrogen (used to simulate cryogenic propellant without the risk of an explosion) around 9am CST and spent around three hours performing an “initial pressure test.” It’s unclear what that test entailed but it most likely involved raising the tank’s internal pressure to levels achieved by SN7.0 and SN7.1 Musk has previously said that that 6 bar was the bare minimum necessary for orbital flight, translating to 7.5-8.5 bar to achieve an industry-standard safety margin of 25-40%.
That SN7.2 survived that initial pressure test bodes well for the significant mass reductions SpaceX will need to optimize Starships for efficient orbital flight, potentially shaving 5-10 metric tons off the dry mass of future ships. For orbital rocket stages, every single kilogram of mass reduction translates to an extra kilogram of cargo capacity, whereas boost stages (i.e. Super Heavy) offer far more lenient ratios on the order to 10:1, meaning that adding 5-10 kilograms of rocket hardware reduces maximum payload capacity by just ~1 kg.
Depending on when SpaceX is allowed to launch Starship SN9, the company’s next test could involve pressurizing SN7.2 until it bursts, determining if the tank’s thinner skin substantially impacts its performance as a pressure vessel.
News
Tesla Sweden’s port deal sparks political clash in Trelleborg
The extension of Tesla’s lease has drawn criticism from the local Social Democratic opposition.
Tesla Sweden’s lease agreement at the Port of Trelleborg has triggered a political dispute, with local leaders divided over whether the municipally owned port should continue renting space to the electric vehicle maker amidst its ongoing conflict with the IF Metall union.
Tesla Sweden’s recently extended contract with the Port of Trelleborg has triggered calls for greater political oversight of future agreements.
Tesla has used the Port of Trelleborg to import vehicles into Sweden amid a blockade by the Transport Workers’ Union, as noted in a report from Dagens Arbete (DA). By routing cars via trucks on passenger ferries, the company has maintained deliveries despite the labor dispute. Vehicles have also been stored and prepared in facilities leased from the municipal port company.
The extension of Tesla’s lease has drawn criticism from the local Social Democratic opposition. Initially, the Port of Trelleborg hinted that it would not enter into new agreements with Tesla, but it eventually opted to renew its existing contract with the EV maker anyway.
Lennart Höckert, an opposition councilor, described the port’s decision as a “betrayal of the Swedish model,” arguing that a municipally owned entity should not appear to side with one party in an active labor dispute.
“If you want to protect the Swedish model, you shouldn’t get involved in a conflict and help one of the parties. When you as a company do this, it means that you are actually taking a position and making things worse in an already ongoing conflict,” Höckert said.
He added that the party now wants politicians to review and approve future rental agreements involving municipal properties at the port.
The proposal has been sharply criticized by Mathias Andersson of the Sweden Democrats, who chairs the municipal board. In comments to local media, Andersson described the Social Democrats’ approach as “Kim Jong Un-style,” arguing that political leaders should not micromanage a company governed by its own board.
“I believe that the port should be run like any other business,” Andersson said. He also noted that operational decisions fall under the authority of the Port of Trelleborg’s board instead of elected officials.
Elon Musk
Elon Musk’s X sees outage on Monday as users report issues
Monday’s outage follows a similar issue that befell the social media platform in mid-January.
X experienced an outage on Monday morning, with tens of thousands of users reporting that the platform failed to load across both desktop and mobile. The disruption began around 8:02 a.m. ET, as per Downdetector data, and quickly escalated in the U.S. and U.K.
Monday’s outage follows a similar issue that befell the social media platform in mid-January.
Shortly after 8 a.m. ET, Downdetector showed a sharp rise in incident reports. At one point, U.S. complaints exceeded 40,000, while U.K. reports climbed past 6,000. Earlier in the outage, filings had already crossed 11,000 in the U.S. and 3,300 in the U.K., as noted in a TechRadar report. X users in other locations, such as the Philippines and Costa Rica, also reported similar issues.
Users attempting to access X were met with a “something went wrong” message. Feeds did not refresh, posts failed to appear, and both the social media platform’s app and web versions appeared affected by the issue. The outage struck during peak weekday usage, amplifying its visibility across regions worldwide.
X has not issued an official explanation for the latest outage or confirmed what caused the service disruption. The scale of complaints drew comparisons to the platform’s major outage in November 2025, which resulted in users being met with “Internal server error / Error code 500” messages, as well as Cloudflare-related error notices.
The incident also comes just weeks after X experienced a similar downtime in mid-January. That outage seemed more notable, however, with more than 100,000 users reporting issues with the social media platform on Downdetector.
Elon Musk
New details emerge on The Boring Company’s Universal tunnel plans
The materials outline staffing, construction timelines, tunnel configuration, and operational details that were not previously public.
Newly released bidding documents have shed light on how Elon Musk’s Boring Company plans to connect Universal Orlando Resort’s north campus to Universal Epic Universe.
The materials outline staffing, construction timelines, tunnel configuration, and operational details that were not previously public about the planned Loop system.
The Shingle Creek Transit & Utility Community Development District voted Feb. 11 to begin contract negotiations with The Boring Company after ranking it the top bidder for the Universal Orlando transport project. Now, evaluation documents obtained by local news media reveal how the company intends to execute the project, according to Attraction Insight.
The proposal describes a twin-tunnel configuration, with one tunnel in each direction. It also noted that permitting, design, and construction could take roughly a year and a half once approvals are secured. The company indicated it could deploy multiple tunnel boring machines and install temporary support infrastructure, including muck storage pits and stormwater systems, during construction.
Bid documents list eight internal specialists assigned to the project, including tunnel engineers, structural engineers, and tunnel boring machine experts. Six subcontractors would handle fire protection, communications, soil treatment, and concrete work.
The company stated it “has the necessary internally produced tunneling equipment and personnel immediately available to complete this project for the district as quickly as permits and approvals can be obtained.”
Operationally, the system would mirror the company’s Las Vegas Loop model, using Tesla vehicles to provide point-to-point transport rather than fixed-route buses. The proposal frames the concept as “on-demand, express transportation,” with vehicles dispatched as needed and capacity adjustable in real time.
Stations could be built underground or above ground with ramp access into tunnels. The documents also referenced potential future integration of a configurable Robovan for passengers and cargo, though capacity projections for the Orlando tunnels have not yet been disclosed.
The proposal states that the Loop can integrate “easily into environmentally sensitive areas,” but it does not provide detailed mitigation plans for Central Florida’s high water table and limestone geology, which is susceptible to sinkholes. The company has stated that it intends to hire an Orlando-based geotechnical firm to evaluate soil conditions.
Tesla Sweden’s port deal sparks political clash in Trelleborg
Elon Musk’s X sees outage on Monday as users report issues
