News
SpaceX retracts Falcon 9 booster’s landing legs a second time after speedy reuse
Following the Falcon 9 booster’s second successful NASA launch in less than three months, SpaceX recovery technicians have once again rapidly retracted B1056’s four landing legs, also reused from the booster’s May 2019 launch debut.
On the heels of Falcon 9 B1056’s first speedy, leg-retracting recovery, a repeat of the booster’s impressive landing leg retraction debut – using the same legs, no less – serves as an excellent sign that whatever hardware changes were implemented are on the right track. As part of SpaceX and CEO Elon Musk’s interim goal of launching the same Falcon 9 booster twice in 1-2 days, a speedy recovery is an absolute necessity, and landing leg retraction is just one of the dozens of ways the company will need to optimize recovery and reuse to lower average turnaround times from weeks to days.
Falcon 9 B1056 completed its successful launch debut on May 4th, 2019, landing on drone ship Of Course I Still Love You (OCISLY) to preserve an ongoing Crew Dragon failure investigation at Landing Zones 1 and 2 (LZ-1/2). Situated just a few dozen miles off the coast of Florida, OCISLY returned to port with the booster barely a day after the landing, easily the fastest drone ship return yet.
Less than two days after arriving at Port Canaveral, SpaceX technicians had already begun the landing leg retractions in what was the first actual attempt in months. Falcon 9 Block 5 debuted back in May 2018 with comments from Musk indicating that retractable legs were one of several major reusability-focused changes, but SpaceX recovery technicians never got beyond a handful of partial tests in the second half of 2018.
This ended with a truly flawless full retraction of all four landing legs on May 7th, confirmed when booster B1056 was flipped horizontally, loaded onto a powered transporter, and driven back to a SpaceX refurbishment facility with all four scorched legs installed.
Even more impressively, although it’s impossible to know if the retracted legs were removed, inspected, and reattached during refurbishment, all four of those legs were unambiguously flown again on B1056’s second launch less than three months later. Some cursory analysis of photos of CRS-18 taken by SpaceX, NASA, and others definitively identifies all four landing legs as the same ones that flew on CRS-17 – installed in the same positions, no less.
At least in the context of the Falcon family of rockets, SpaceX’s ultimate goal is to dramatically lower the cost of Falcon 9 and Heavy launches by quickly, easily, and safely reusing every part of the rocket except its orbital upper stage, which makes maybe 10-15% of hardware costs. A magnitude reduction in costs is thus out of the question for the Falcon family – a challenge that will be tackled instead by Starship and Super Heavy, a new clean-sheet launch vehicle.
Nevertheless, it’s entirely possible that Falcon 9 missions will be able to launch for 3-5 times less than their current list price ($62M) within a year or two and definitely before the family is replaced by its successor(s). In fact, according to CEO Elon Musk, SpaceX has already lowered the average base price nearly 20%, cutting it to $50M to communicate some of the financial rewards of efficient reuse to its customers.
Of course, it’s important to remember that even if SpaceX gets to a point where it could technically cut its launch prices in half (or more), breaking even on a marginal cost basis does not account for SpaceX’s desire to recoup some of the $1B+ it has spent perfecting Falcon reusability. The fact that prices have (at least according to Musk) been lowered a decent amount is a good sign that SpaceX will choose market expansion over greed, but one can never be certain and Falcon 9 and Heavy pricing may very well never reflect their true reusability.
For now, SpaceX’s rapid progress from zero landing leg retraction to retracting the same booster’s same four landing legs twice in less than three months is an excellent sign that Block 5’s capabilities continue to be refined. In terms of milestones, the first launch of a thrice-flown booster is up next for Falcon 9, as is the first reuse of a recovered Falcon fairing half (or two).
Check out Teslarati’s Marketplace! We offer Tesla accessories, including for the Tesla Cybertruck and Tesla Model 3.
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
