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SpaceX surprises after recovering spacecraft 'trunk' in one piece
In a surprise twist, SpaceX has recovered an expendable ‘trunk’ that launched with Crew Dragon on its January 19th In-Flight Abort (IFA) test, in which the spacecraft successfully escaped from an exploding Falcon 9 rocket.
While recovering pieces of Dragon’s disposable trunk would not have been shocking, SpaceX has returned this particular Crew Dragon trunk to shore in a condition that can only be described as unscathed. The surprise came first on the evening of January 19th, when two separate SpaceX ships returned to Port Canaveral — first and foremost bringing Crew Dragon capsule C205 back to dry land for inspection and possible reuse. However, a separate ship – GO Navigator – followed the ship carrying Crew Dragon not long after, revealing a shockingly intact Dragon trunk on its deck.
At 10:30 am EST (15:30 UTC) on January 19th, Falcon 9 booster B1046, an expendable upper stage, and the newest Crew Dragon spacecraft lifted off from Kennedy Space Center (KSC) Launch Complex 39A (Pad 39A) on the spacecraft’s second-ever integrated launch. Designed to push Crew Dragon’s abort systems to their limits, the spacecraft ignited its SuperDraco thrusters around 85 seconds after liftoff, soaring away from a supersonic Falcon 9 and triggering the rocket’s catastrophic (but expected) explosion around 10 seconds later.
A bit like pushing against a wall, Crew Dragon had to fight uphill against a continuous supersonic blast of air to escape the Falcon 9 rocket that launched it, likely adding tens of thousands of pounds (several dozen metric tons) of additional pressure spread out over the top of the capsule. The spacecraft and its detachable trunk section – carrying a solar array, radiators, and four fins – appeared to survive the experience without issue.
The capsule’s SuperDraco engines shut off after about 10 seconds, leaving the integrated spacecraft to coast to an apogee of ~40 km (25 mi), where it finally detached its trunk (pictured above). Designed to be disposable, Crew Dragon features a trunk functionally similar to the one SpaceX has flown almost 20 times on Cargo Dragon (Dragon 1) missions. Crew Dragon’s trunk looks quite a bit different, stretching taller and featuring an interesting conformal solar array (vs. Dragon 1’s deployable panels), as well as radiators (white rectangular panels) the spacecraft needs to maintain thermal equilibrium while in space.
Nominally, Crew Dragon and Cargo Dragon launch on Falcon 9, reach orbit, and go about their business of delivering astronauts and cargo to and from the International Space Station (ISS). After completing their given mission, the trunk section is eventually detached an hour or two before one last reentry burn, eventually returning the spacecraft to Earth. The trunk is thus left in low Earth orbit (LEO), eventually reentering on its own days, weeks, or months later and vaporizing into plasma before it hits Earth’s surface.
While it’s thus surprising that Crew Dragon C205’s trunk section – built primarily out of carbon composites like Falcon 9’s payload fairing and interstage – survived its In-Flight Abort mission more or less intact, the unexpected recovery sadly doesn’t mean that SpaceX has any plans to try to routinely recover or reuse the hardware. If Dragon trunks detached well before orbit, SpaceX might reconsider, but that would defeat their purpose of providing Dragons with power and thermal management while in orbit.
Surviving a terminal-velocity ocean splashdown is certainly no mean feat, but surviving an orbital-velocity atmospheric reentry is magnitudes more challenging, although SpaceX is certainly cognizant of the trade-off. Starship, for example, is expected to include thermal management and power generation systems as an integral part of the (nominally) fully-reusable spaceship and upper stage. At the scale of Crew Dragon, it’s just hard to rationalize doubling or tripling the mass of the spacecraft’s trunk just to tack on a complex recovery system.
All told, both NASA and SpaceX have since indicated that preliminary telemetry from Crew Dragon’s In-Flight Abort test paints an extremely positive picture and effectively confirmed that the test was a total success. With a little luck, it’s safe to say that Crew Dragon will be sacrificing a trunk section in orbit before returning NASA astronauts to Earth just a few months from now.
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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
