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SpaceX just surpassed ULA to snag an American launch record (and landed a rocket)
SpaceX has successfully completed its 84th Falcon 9 rocket launch (and 52nd booster landing), surpassing the United Launch Alliance’s Atlas V to snag a long-standing American launch record.
At 3:30 pm EDT (19:30 UTC), Falcon 9 lifted off right on time after a seven-day delay and rare one-day slip forward. The 6th Starlink v1.0 mission and 7th Starlink launch overall, Falcon 9 successfully placed another batch of 60 satellites in orbit just 35 days after an almost identical booster suffered SpaceX’s first in-flight engine failure in more than eight years. Thankfully, SpaceX says that it already determined what went wrong on March 18th and the successful launch on April 22nd certainly goes a long way towards confirming its conclusions.
Like all Starlink v1.0 launches, a flight-proven Falcon 9 booster (B1051’s fourth flight) and a new upper stage worked together to send some 16 metric tons (~35,000 lb) of Starlink satellites into a very low Earth orbit (VLEO). Booster B1051 performed exactly as expected on its fourth orbital-class launch, burning for about 2.5 minutes before separating and allowing an expendable Falcon 9 upper stage to continue to orbit with its Starlink payload. About six minutes later, after a successful reentry burn and landing burn, the rocket gently touched down on drone ship Of Course I Still Love You (OCISLY). Seconds later, the upper stage shut down after safely placing 60 Starlink satellites in the correct orbit.
Another six minutes later, the same upper stage successfully deployed all 60 Starlink satellites, allowing them to slowly spread out on there own – a bit like a giant deck of cards with the weight of a small tank.
Aside from serving as an extremely reassuring return-to-flight and return-to-landing for Falcon 9 after an in-flight engine failure and two back-to-back booster landing failures, the successful launch also means that Falcon 9 now holds a significant US rocketry record. In essence, SpaceX’s workhorse rocket is now the most prolific US launch vehicle currently operating, surpassing the United Launch Alliance’s Atlas V. Since August 2002, the ULA rocket has completed 83 (mostly) successful launches.
Debuting more than eight years after Atlas V, Falcon 9 passed the 83 launch mark on March 18th and has now successfully crested 84 launches with its April 22nd Starlink-6 mission. In other words, despite operating less than half as long as Atlas V, Falcon 9 has already completed more launches than the ULA workhorse rocket, averaging one launch every 1.3 months compared to Atlas V’s 2.7 months. While SpaceX’s latest Falcon 9 v1.2 rocket variant has only launched 62 of its 84 missions since it debuted in 2015, it’s still considered slightly more reliable than the famously reliable Atlas V.
In short, SpaceX’s Falcon 9 rocket continues to prove itself to be exceptionally capable and reliable, while also managing to rapidly become one of the most-launched US rockets ever. Given that SpaceX is set on continuously and aggressively increasing the rocket’s launch cadence, Falcon 9 may be just a few years away from becoming the most-launched modern US rocket ever – a title currently held by Delta II (retired in 2018).
News
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
