News
SpaceX readies 4th Falcon 9 booster for 10th launch and landing [webcast]
Update: SpaceX has delayed Starlink 4-6 and Falcon 9 B1060’s tenth launch and landing to a backup window scheduled no earlier than (NET) 9:02 pm EST, Tuesday, January 18th (02:04 UTC 19 Jan).
Initially aiming for January 17th, SpaceX pushed the mission to 7:04 pm EST, January 18th for “more favorable weather conditions for liftoff and booster recovery.” A backup window two hours later on the same day was likely selected for similar reasons. Tune in around 8:45 pm EST (01:45 UTC) to watch Falcon 9 B1060’s tenth launch and landing attempt live.
Four days after Falcon 9 B1058 became the third SpaceX booster to complete ten orbital-class launches, the company is set to repeat the feat a fourth time.
Unofficially revealed by airspace and maritime safety alerts on January 12th, SpaceX has confirmed plans to launch Starlink 4-6 – another batch of 49 laser-linked V1.5 satellites – no earlier than (NET) 7:26 pm EST, Monday, January 17th (00:26 UTC 18 Jan) from Kennedy Space Center Pad 39A. The same pad supported an identical launch (Starlink 4-5) on January 6th, requiring a brisk 11-day turnaround for a pad that’s all-time record is two Falcon launches in 10 days.
While technically “just” another Starlink launch, the mission will mark the first time two Falcon 9 boosters have launched for the tenth time back to back. On January 13th, Falcon 9 B1058 helped deliver 105 small rideshare satellites to orbit, completing its tenth successful launch and landing in the process. While there are only two other ten-flight boosters to compare against, B1058 crossed the milestone more than a third faster than either of its siblings, launching ten times in 19 months or once every ~59 days for the duration of its life.
When Falcon 9 B1060 lifts off with Starlink 4-6 on January 17th, 2022, it will do so in 18 months (~81 weeks), beating B1058’s days-old record (19 months or ~85 weeks) by about a month. Though there are several younger, less-flown boosters in SpaceX’s current Falcon fleet, none of them appear to be on track to more than marginally beat or match the records about to be set by B1058 and B1060. Based on SpaceX’s twice-achieved 27-day Falcon 9 turnaround record, it might technically be possible for the same booster to complete 10 launches in as few as 270 days (~39 weeks), employees have described those record turnarounds as “a mad rush” – probably not a sustainable pace for the current workforce, in other words.
Nonetheless, even if evidence continues to grow that the current iteration of Falcon Block 5 boosters are unlikely to average more than one launch every 50-60 days over their lives, SpaceX could still theoretically achieve an eyewatering launch cadence. For example, if SpaceX’s current fleet of nine operational Falcon boosters (including one converted Falcon Heavy core) can each achieve an average of one launch every 60 days starting now, SpaceX could feasibly launch more than once per week or ~54 times per year. If SpaceX also converts Falcon Heavy core B1053 into a Falcon 9, damaged Falcon 9 booster B1069 is able to enter the fleet, and the average turnaround time drops to 50 days, that 11-booster fleet could support up to 80 launches per year.
SpaceX’s three Falcon launch pads could theoretically support up to 90 launches per year if every single turnaround was as fast as each pad’s all-time record and no extended downtime was ever needed. In other words, in spite of just how far the Falcon Block 5 design appears to be from CEO Elon Musk’s long-stated dream of daily reuse, a fleet of just 15 Block 5 boosters averaging a conservative 60 days per launch could achieve an annual cadence that would force SpaceX to upgrade its launch pads to go any higher.
With Starship on the horizon, though, it’s no longer clear that SpaceX actually wants to push the Falcon family’s envelope to the point that another round of significant vehicle or pad upgrades are required. Unless Starship suffers catastrophic setbacks causing years of delays, it’s more likely than not that the Falcon family will peak around 60 launches per year (still incredibly impressive) before its likely retirement.
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
