News
NASA’s SLS Moon rocket almost aces vital prelaunch test on 7th try
Following several incomplete attempts in April, June, August, and September, NASA’s first Space Launch System (SLS) Moon rocket has almost aced a vital prelaunch test on the seventh try.
NASA says that “all objectives were met” during the ten-hour test, which wrapped up around 4:30 pm EDT (20:30 UTC) on Wednesday, September 21st. Despite the rocket running into multiple additional issues, some old and others new, the agency was confident enough in the preliminary results of the wet dress rehearsal (WDR) – deemed a “cryogenic demonstration test” – to reaffirm that it’s still working towards a third launch attempt as early as September 27th.
That launch date is not set in stone, but NASA also hasn’t ruled out the window after the latest round of SLS testing. The agency will host a press conference on Friday, September 23rd, to provide its final decision and offer more details about the seventh wet dress rehearsal.
Despite NASA’s apparent confidence after the test, which was admittedly smoother than most previous SLS tests at the launch pad, it was far from smooth. The immediate story of the “cryogenic demonstration test” dates back to the SLS Artemis I rocket’s second so-called “launch attempt” on September 3rd. During that attempt, the launch was aborted well before SLS was ready when NASA detected a major hydrogen fuel leak around one of the quick-disconnect umbilical panels that fuels and drains the rocket. Remote troubleshooting was unable to solve the problem, forcing NASA to stand down.
Over the last few weeks, teams inspected, tested, and repaired the faulty Tail Service Mast Umbilical (TSMU), preparing for a cryogenic proof test meant to verify that the issue was fixed. During that September 21st test, the TSMU still leaked significantly for the whole duration, but it did so more predictably and – unlike prior leaks – never violated the limits that would trigger a launch abort.
But near the end, a different umbilical panel developed a significant hydrogen leak that did violate those launch constraints, meaning that NASA would have likely had to stand down yet again if it had attempted to launch before completing additional testing. The test was completed successfully, but its goals and constraints were not the same as those facing a launch.
A NASA-developed rocket leaking hydrogen is unfortunately a tale as old as time. That the agency that struggled with hydrogen leaks throughout the 30-year career of the Space Shuttle appears to be just as flabbergasted by nearly identical problems on a new rocket – SLS – that has Shuttle ‘heritage’ on almost every square inch is not surprising, even if it is somewhat embarassing.
Liquid hydrogen fuel always has been and likely always will be a massive pain to manage in any rocket, but especially in a large rocket. As the smallest element in the universe, it is fundamentally leak-prone. Combined with the fact that it only remains liquid below the extraordinarily low temperature of -253°C (-423°F), generates ultra-flammable hydrogen gas as it continually attempts to warm to a more stable temperature, and naturally embrittles most metals, it’s an engineering nightmare by almost every measure.
For all that pain, hydrogen does provide rocket engineers exceptional efficiency when properly exploited, but even that positive aspect is often diminished by hydrogen’s ultra-low density. For rocket stages that have already reached orbit, hydrogen-oxygen propellant offers unbeatable efficiency. But for a rocket stage that will never be used in orbit, like the SLS core stage, hydrogen fuel is rarely worth the tradeoffs – a reality that SLS is unfortunately providing a strong reminder of.
Demonstrating the Groundhog Day-esque nature of NASA rockets and hydrogen leaks, the same leaky TSMU panel that aborted SLS’ September 3rd launch attempt (sixth WDR) and had to be fixed and retested on September 21st also caused a hydrogen leak that partially aborted the rocket’s third wet dress rehearsal attempt in April 2022. NASA then rolled the rocket back to the Vehicle Assembly Building (VAB), where workers spent almost two months inspecting and reworking the fuel TSMU and fixing other issues. During its first test (WDR #4) after rolling back to the pad in June, the same fuel TSMU leaked and NASA had to return the rocket to the VAB again to fix the problem.
The fuel TSMU then leaked on the SLS rocket’s first launch attempt (really WDR #5), but the problem was resolved and was not what caused NASA to stand down. It was, however, a primary reason behind NASA’s second aborted launch attempt (WDR #6). With any luck, the eighth time will be the charm.
News
Tesla Model Y has become the most common vehicle in Norway
The Tesla Model Y passed more than 70,000 registrations recently.
The Tesla Model Y has become the most common car on Norwegian roads. This is a remarkable achievement for the all-electric crossover, which has also commanded the top spot in Norway’s vehicle sales rankings for several years running.
Model Y Domination
As per vehicle registration figures tracked by the Norwegian Road Traffic Information Council (OFV), there were 68,378 Model Ys with Norwegian license plates at the end of March/beginning of April 2025. In recent weeks, the Model Y passed more than 70,000 registrations, as per a report from Elbil24.
With the Model Y now becoming the most common car in Norway, the Toyota Rav4 now stands in second place, followed by the Nissan Leaf, the Volkswagen Golf, and the Toyota Yaris. The Model Y also topped the country’s vehicle registration rankings for the last three years, and it set a record for selling the most vehicles in a year in 2023, breaking the Volkswagen Beetle’s record that has stood since 1969.
Possibly More Momentum
It is undeniable that the Tesla Model Y has helped Norway push its electric vehicle transition. As of date, electric vehicles now account for 28% of the Norwegian car fleet, a notable portion of which is comprised of the all-electric crossover.
While the Model Y’s achievements in Norway have been impressive, the vehicle could expand its reach into the country even more this year. Tesla, after all, has been aggressively pushing the new Model Y to consumers, with the company offering a zero percent interest promotion for the vehicle. These efforts, as well as the new Model Y’s improved features, should make the vehicle even more compelling to Norwegian car buyers this year.
Elon Musk
Tesla Board Chair slams Wall Street Journal over alleged CEO search report
Denholm’s comments were posted by Tesla on its official account on social media platform X.
Tesla Board Chair Robyn Denholm has issued a stern correction to The Wall Street Journal after the publication posted a report alleging that the electric vehicle maker’s Board of Directors opened a search for a new CEO to replace Elon Musk.
Denholm’s comments were posted by Tesla on its official account on social media platform X.
The WSJ’s Allegations
Citing people reportedly familiar with the discussions, the WSJ alleged that Tesla Board members reached out to several executive search firms to work on a formal process for finding Elon Musk’s successor. The publication also alleged that tensions had been mounting at Tesla due to the company’s dropping sales and profits, as well as the time Musk has been spending with DOGE.
The publication also alleged that Elon Musk had met with the Tesla Board about the matter, and that members told the CEO that he needed to spend more time on Tesla. Musk was reportedly instructed to state his intentions publicly as well. The CEO did not push back against the Board, the WSJ claimed.
Elon Musk did announce that he is stepping back from his day-to-day role at the Department of Government Efficiency during the Tesla Q1 2025 earnings call. Musk’s announcement was embraced by Tesla investors and analysts, many of whom felt that the CEO’s renewed focus on the EV maker could push the company to greater heights.
Tesla and Musk’s Response
In response to The Wall Street Journal’s report, Tesla’s official account on X shared a comment from its Board Chair. In her comment, Denham noted that the WSJ‘s report was “absolutely false.” She also highlighted that Tesla had communicated this fact to the publication before the report was published, but the Journal ran the story anyway.
“Earlier today, there was a media report erroneously claiming that the Tesla Board had contacted recruitment firms to initiate a CEO search at the company. This is absolutely false (and this was communicated to the media before the report was published). The CEO of Tesla is Elon Musk and the Board is highly confident in his ability to continue executing on the exciting growth plan ahead,” Denholm stated.
Elon Musk himself commented on the matter, stating that the publication showed an “extremely bad breach of ethics” since the report did not even include the Tesla Board of Directors’ denial of the allegations. “It is an EXTREMELY BAD BREACH OF ETHICS that the WSJ would publish a DELIBERATELY FALSE ARTICLE and fail to include an unequivocal denial beforehand by the Tesla board of directors!” Musk wrote in a post on X.
Elon Musk
Elon Musk is now a remote DOGE worker: White House Chief of Staff
The Tesla and SpaceX CEO Elon Musk is no longer working from the West Wing.
In a conversation with the New York Post, White House Chief of Staff Susie Wiles stated that Tesla and SpaceX CEO Elon Musk is no longer working from the West Wing.
As per the Chief of Staff, Musk is still working for DOGE—as a remote worker, at least.
Remote Musk
In her conversation with the publication, Wiles stated that she still talks with Musk. And while the CEO is now working remotely, his contributions still have the same net effect.
“Instead of meeting with him in person, I’m talking to him on the phone, but it’s the same net effect,” Wiles stated, adding that “it really doesn’t matter much” that the CEO “hasn’t been here physically.” She also noted that Musk’s team will not be leaving.
“He’s not out of it altogether. He’s just not physically present as much as he was. The people that are doing this work are here doing good things and paying attention to the details. He’ll be stepping back a little, but he’s certainly not abandoning it. And his people are definitely not,” Wiles stated.
Back to Tesla
Musk has been a frequent presence in the White House during the Trump administration’s first 100 days in office. But during the Q1 2025 Tesla earnings call, Musk stated that he would be spending substantially less time with DOGE and substantially more time with Tesla. Musk did emphasize, however, that DOGE’s work is extremely valuable and critical.
“I think I’ll continue to spend a day or two per week on government matters for as long as the President would like me to do so and as long as it is useful. But starting next month, I’ll be allocating probably more of my time to Tesla and now that the major work of establishing the Department of Government Efficiency is done,” Musk stated.
Tesla Model Y has become the most common vehicle in Norway
Tesla Board Chair slams Wall Street Journal over alleged CEO search report
Elon Musk is now a remote DOGE worker: White House Chief of Staff
-
News1 week agoTesla’s Hollywood Diner is finally getting close to opening
-
Elon Musk2 weeks agoTesla doubles down on Robotaxi launch date, putting a big bet on its timeline
-
News6 days agoTesla is trying to make a statement with its Q2 delivery numbers
-
Investor's Corner1 week agoLIVE BLOG: Tesla (TSLA) Q1 2025 Company Update and earnings call
-
Elon Musk2 weeks agoTesla reportedly suspended Cybercab and Semi parts order amid tariff war: Reuters
-
SpaceX2 weeks agoSpaceX pitches subscription model for Trump’s Golden Dome
-
News2 weeks agoDriverless Teslas using FSD Unsupervised are starting to look common in Giga Texas
-
News4 days agoNY Democrats are taking aim at Tesla direct sales licenses in New York