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SpaceX CEO Elon Musk’s hat is safe after ULA Vulcan rocket launch slips to 2023
In the latest unfortunate development for SpaceX competitor United Launch Alliance’s next-generation Vulcan Centaur rocket, it looks like CEO Elon Musk may have been right all along when he forecast major delays more than three years ago.
In February 2018, even before SpaceX had flown Falcon Heavy for the first time, detractors with axes to grind were already busy attempting to downplay the rocket’s capabilities. On February 6th, Falcon Heavy lifted off for the first time, launching a several-ton Tesla Roadster car into interplanetary space and marking the first debut of a super heavy-lift rocket since the 1980s. That successful launch also meant that ULA’s last bastion of competitive advantage – the Delta IV Heavy rocket, fittingly by way of monopoly – was no longer alone.
Indeed, mere months after its near-flawless debut, Falcon Heavy had already secured its first operational US military launch contract. Delta IV Heavy, on the other hand, had already been preparing for retirement as part of ULA’s plan to replace two complex rockets (Delta and Atlas) with Vulcan.
Musk mercilessly took to task ULA’s heavy-lift rocket when commenters brought it up, noting that Falcon Heavy is largely comparable in a partially-reusable configuration but completely outclasses Delta IV Heavy – while still being dramatically cheaper – if all boosters are expended. The SpaceX CEO estimated that Delta IV Heavy launches would cost ULA significantly more than $400M after the company had effectively announced the end of Delta IV Medium production, though ULA CEO Tory Bruno still claimed a launch price of ~$350M.
In response to a reply noting that ULA’s plan was to replace Atlas V and Delta IV with Vulcan Centaur for launches “after 2020,” Musk pulled no punches, stating that he would “seriously eat [his] hat with a side of mustard if [Vulcan] flies a national security spacecraft before 2023.” At the time, ULA’s CEO did not exactly seem to share Musk’s shocking appraisal of the situation, which was out of left field even for major SpaceX proponents.
At the time, ULA’s party line touted Vulcan Centaur lifting off for the first time in late 2019 – the very next year. Ironically, weeks after Musk threw down his hat-eating gauntlet, ULA announced that Vulcan’s first launch had slipped to “mid-2020” – with a second flight later the same year – to give the company time to move straight to a larger upper stage originally meant to debut later on. Six months later, ULA announced yet another delay for Vulcan, this time pushing the rocket’s launch debut from mid-2020 to no earlier than (NET) April 2021.
Three years later, April 2021 has come and gone and ULA’s latest public Vulcan launch target is now “late 2021,” though that is all but guaranteed to slip into early 2022. In the latest (not-so-) shocking development for ULA’s next-generation rocket, the company has now requested and received permission from the US military to swap out Vulcan for an Atlas V rocket on what would have been the vehicle’s first military launch.
Exercising a contract loophole that had to have been explicitly designed to give ULA – and ULA alone – the option to fall back on its Atlas V or Delta IV rockets if Vulcan were to experience major delays, Atlas V will now take over the ULA’s USSF-51 mission. As a result, Vulcan Centaur’s first dedicated ‘national security’ launch is now officially scheduled no earlier than 2023, saving Elon Musk from having to eat his hat.
As of May 2021, ULA has now replaced one Vulcan launch with an Atlas V and inexplicably closed nine Atlas V launch contracts with Starlink competitor Amazon, bringing into question whether the company is ever actually going to simplify its rocket production lines. Given that ULA no longer appears to be planning on reusing parts of Vulcan, the only possible way Vulcan will end up more affordable than the rockets its replacing is if it quickly becomes the only rocket ULA produces, which was originally the plan. With ULA now apparently going out of its way to sell Atlas V commercially instead of Vulcan Centaur, it’s difficult to argue that the company has any interest at all in lowering the cost of access to space or offering SpaceX serious competition outside of lobbying and greasing the hinges of revolving doors.
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Tesla confirms that it finally solved its 4680 battery’s dry cathode process
The suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.
Tesla has confirmed that it is now producing both the anode and cathode of its 4680 battery cells using a dry-electrode process, marking a key breakthrough in a technology the company has been working to industrialize for years.
The update, disclosed in Tesla’s Q4 and FY 2025 update letter, suggests the company has finally resolved one of the most challenging aspects of its next-generation battery cells.
Dry cathode 4680 cells
In its Q4 and FY 2025 update letter, Tesla stated that it is now producing 4680 cells whose anode and cathode were produced during the dry electrode process. The confirmation addresses long-standing questions around whether Tesla could bring its dry cathode process into sustained production.
The disclosure was highlighted on X by Bonne Eggleston, Tesla’s Vice President of 4680 batteries, who wrote that “both electrodes use our dry process.”
Tesla first introduced the dry-electrode concept during its Battery Day presentation in 2020, pitching it as a way to simplify production, reduce factory footprint, lower costs, and improve energy density. While Tesla has been producing 4680 cells for some time, the company had previously relied on more conventional approaches for parts of the process, leading to questions about whether a full dry-electrode process could even be achieved.
4680 packs for Model Y
Tesla also revealed in its Q4 and FY 2025 Update Letter that it has begun producing battery packs for certain Model Y vehicles using its in-house 4680 cells. As per Tesla:
“We have begun to produce battery packs for certain Model Ys with our 4680 cells, unlocking an additional vector of supply to help navigate increasingly complex supply chain challenges caused by trade barriers and tariff risks.”
The timing is notable. With Tesla preparing to wind down Model S and Model X production, the Model Y and Model 3 are expected to account for an even larger share of the company’s vehicle output. Ensuring that the Model Y can be equipped with domestically produced 4680 battery packs gives Tesla greater flexibility to maintain production volumes in the United States, even as global battery supply chains face increasing complexity.
Elon Musk
Tesla Giga Texas to feature massive Optimus V4 production line
This suggests that while the first Optimus line will be set up in the Fremont Factory, the real ramp of Optimus’ production will happen in Giga Texas.
Tesla will build Optimus 4 in Giga Texas, and its production line will be massive. This was, at least, as per recent comments by CEO Elon Musk on social media platform X.
Optimus 4 production
In response to a post on X which expressed surprise that Optimus will be produced in California, Musk stated that “Optimus 4 will be built in Texas at much higher volume.” This suggests that while the first Optimus line will be set up in the Fremont Factory, and while the line itself will be capable of producing 1 million humanoid robots per year, the real ramp of Optimus’ production will happen in Giga Texas.
This was not the first time that Elon Musk shared his plans for Optimus’ production at Gigafactory Texas. During the 2025 Annual Shareholder Meeting, he stated that Giga Texas’ Optimus line will produce 10 million units of the humanoid robot per year. He did not, however, state at the time that Giga Texas would produce Optimus V4.
“So we’re going to launch on the fastest production ramp of any product of any large complex manufactured product ever, starting with building a one-million-unit production line in Fremont. And that’s Line one. And then a ten million unit per year production line here,” Musk stated.
How big Optimus could become
During Tesla’s Q4 and FY 2025 earnings call, Musk offered additional context on the potential of Optimus. While he stated that the ramp of Optimus’ production will be deliberate at first, the humanoid robot itself will have the potential to change the world.
“Optimus really will be a general-purpose robot that can learn by observing human behavior. You can demonstrate a task or verbally describe a task or show it a task. Even show it a video, it will be able to do that task. It’s going to be a very capable robot. I think long-term Optimus will have a very significant impact on the US GDP.
“It will actually move the needle on US GDP significantly. In conclusion, there are still many who doubt our ambitions for creating amazing abundance. We are confident it can be done, and we are making the right moves technologically to ensure that it does. Tesla, Inc. has never been a company to shy away from solving the hardest problems,” Musk stated.
Elon Musk
Rumored SpaceX-xAI merger gets apparent confirmation from Elon Musk
The comment follows reports that the rocket maker is weighing a transaction that could further consolidate Musk’s space and AI ventures.
Elon Musk appeared to confirm reports that SpaceX is exploring a potential merger with artificial intelligence startup xAI by responding positively to a post about the reported transaction on X.
Musk’s comment follows reports that the rocket maker is weighing a transaction that could further consolidate his space and AI ventures.
SpaceX xAI merger
As per a recent Reuters report, SpaceX has held discussions about merging with xAI, with the proposed structure potentially involving an exchange of xAI shares for SpaceX stock. The value, structure, and timing of any deal have not been finalized, and no agreement has been signed.
Musk appeared to acknowledge the report in a brief reply on X, responding “Yeah” to a post that described SpaceX as a future “Dyson Swarm company.” The comment references a Dyson Swarm, a sci-fi megastructure concept that consists of a massive network of satellites or structures that orbit a celestial body to harness its energy.
Reuters noted that two entities were formed in Nevada on January 21 to facilitate a potential transaction for the possible SpaceX-xAI merger. The discussions remain ongoing, and a transaction is not yet guaranteed, however.
AI and space infrastructure
A potential merger with xAI would align with Musk’s stated strategy of integrating artificial intelligence development with space-based systems. Musk has previously said that space-based infrastructure could support large-scale computing by leveraging continuous solar energy, an approach he has framed as economically scalable over time.
xAI already has operational ties to Musk’s other companies. The startup develops Grok, a large language model that holds a U.S. Department of Defense contract valued at up to $200 million. AI also plays a central role in SpaceX’s Starlink and Starshield satellite programs, which rely on automation and machine learning for network management and national security applications.
Musk has previously consolidated his businesses through share-based transactions, including Tesla’s acquisition of SolarCity in 2016 and xAI’s acquisition of X last year. Bloomberg has also claimed that Musk is considering a merger between SpaceX and Tesla in the future.
Tesla confirms that it finally solved its 4680 battery’s dry cathode process
Tesla Giga Texas to feature massive Optimus V4 production line
