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SpaceX skips Falcon 9 landing leg retraction on record-breaking booster
Four days after it returned to port, SpaceX quickly brought its latest recovered Falcon 9 booster horizontal, the last step before it can be transported back to one of SpaceX’s launch pad-adjacent processing facilities.
For unknown reasons, SpaceX skipped retracting its landing legs, but thanks to its recent reusability record, this particular Falcon 9 booster is now more important than ever.
On November 11th, Falcon 9 B1048 launched the 60-satellite Starlink-1 mission and became the first orbital-class SpaceX booster to fly on four separate missions. Preceded by Iridium-7 (July 2018), SAOCOM 1A (Oct 2018), and PSN-6/Nusantara Satu (Feb 2019), Starlink-1 was B1048’s (and SpaceX’s) heaviest payload ever, likely weighing around 17-18 metric tons (~39,000 lb).
Eight and a half days after Falcon 9 helped deliver all 60 satellites to an exceptionally low ~280 km (175 mi) parking orbit, all satellites have successfully deployed their solar arrays and powered on their electric thrusters, including the lone spacecraft SpaceX had concerns about prior to launch. That straggler came alive roughly 60 hours after its siblings but has since raised its orbit ~20 km, while the other 59 satellites have booster themselves by an average of 40 km (25 mi) or so.
At their current collective pace of ~5 km per day, all 60 satellites should reach their operational ~550 km (340 mi) orbits around the beginning of 2020.
Falcon 9 Block 5’s newest pathfinder
A bit less than nine minutes after its inaugural fourth launch, B1048 also became the first Falcon 9 booster to successfully land four times, coming to a halt near the center of drone ship Of Course I Still Love You (OCISLY). With its Port Canaveral processing nearly complete, B1048 now finds itself in a rare position.
-->As the first Falcon 9 Block 5 booster to fly four times, B1048 has first and foremost proven that the Block 5 design can be practically reused at least three times. However, the Block 5 upgrade is designed to support not just four – but at least ten – launches per booster, and SpaceX CEO Elon Musk has estimated that 100 or more launches may be achievable with more substantial routine maintenance. All this is to say that with B1048.4 safe and sound back on land, SpaceX technicians and engineers will likely pore over the booster to determine how exactly it has fared after four orbital-class launches, atmospheric reentries, and landings.
Stated a different way, B1048 is now the Block 5 upgrade’s pathfinder vehicle, meaning that it will in large part determine how SpaceX proceeds with its Falcon 9 reusability program. SpaceX has done this several times in the past – as long as the envelope is being pushed, and even if it’s not, there will always be ‘firsts’ to achieve, be it the first launch of a new rocket or the first launch of a thrice-flown booster. Prior to B1048, B1046 – also the first Falcon 9 Block 5 booster – was the pathfinder for reusability, becoming the first Block 5 booster to be reused for the first time and the second time (launch #3).
However, at the same time, Falcon 9 B1048.4 is arguably less important than it might seem. Perhaps the most useful data to be gained from the new pathfinder will involve comparing it to the likely extensively engineering data SpaceX has gathered from thrice-flown Falcon 9 boosters, including B1048 itself. Although still a fundamentally minuscule sample size in the scope of statistical significance, SpaceX has flown four (soon to be five) separate Falcon 9 boosters three times apiece.
By comparing B1048.4 to B1046.3, B1047.3, B1048.3, and B1049.3, SpaceX should be able to determine just how big the hurdle from a third launch to a fourth launch is compared to going from two launches to three launches. If the changes between those different reusability milestones are similar, it will be increasingly easy for SpaceX to rationally conclude that Falcon 9 Block 5 is fully capable of achieving its 10-flight design goal. If booster wear and tear appears to speed up from Launch 3 to 4 relative to Launch 2 to 3, design tweaks or additional refurbishment may be needed.
Most importantly, however, gathering new, high-fidelity data from flight experience like B1048’s fourth launch ultimately allows SpaceX to systematize post-flight inspections, helping technicians and engineers know where to look and what to watch out for when processing and refurbishing flight-proven boosters. The more boosters, launches, and landings there are, the more confident SpaceX can be that those systems and processes are sound.
For unknown reasons, SpaceX briefly attempted to retract Falcon 9 B1048.4’s landing legs on November 18th but abandoned retraction after a few attempts. On November 19th, technicians processed B1048 exceptionally quickly, removing its legs, breaking the booster over (rotating it to a horizontal position), and securing it on SpaceX’s transporter in barely half a day.
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With recovery operations nearly complete, SpaceX can transport B1048 from Port Canaveral to Cape Canaveral, moving the booster to one of many processing and integration hangars for a thorough inspection and any necessary refurbishment. With any luck, B1048 will be ready for its fifth launch sooner than later, maybe allowing it to support SpaceX’s next dedicated Starlink launch.
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Elon Musk makes a key Tesla Optimus detail official
“Since we are naming the singular, we will also name the plural, so Optimi it is,” Musk wrote on X.
Tesla CEO Elon Musk just made a key detail about Optimus official. In a post on X, the CEO clarified some key wording about Optimus, which should help the media and the public become more familiar with the humanoid robot.
Elon Musk makes Optimus’ plural term official
Elon Musk posted a number of Optimus-related posts on X this weekend. On Saturday, he stated that Optimus would be the Von Neumann probe, a machine that could eventually be capable of replicating itself. This capability, it seems, would be the key to Tesla achieving Elon Musk’s ambitious Optimus production targets.
Amidst the conversations about Optimus on X, a user of the social media platform asked the CEO what the plural term for the humanoid robot will be. As per Musk, Tesla will be setting the plural term for Optimus since the company also decided on the robot’s singular term. “Since we are naming the singular, we will also name the plural, so Optimi it is,” Musk wrote in his reply on X.
This makes it official. For media outlets such as Teslarati, numerous Optimus bots are now called Optimi. It rolls off the tongue pretty well, too.
Optimi will be a common sight worldwide
While Musk’s comment may seem pretty mundane to some, it is actually very important. Optimus is intended to be Tesla’s highest volume product, with the CEO estimating that the humanoid robot could eventually see annual production rates in the hundreds of millions, perhaps even more. Since Optimi will be a very common sight worldwide, it is good that people can now get used to terms describing the humanoid robot.
-->During the Tesla 2025 Annual Shareholder Meeting, Musk stated that the humanoid robot will see “the fastest production ramp of any product of any large complex manufactured product ever,” starting with a one-million-Optimi-per-year production line at the Fremont Factory. Giga Texas would get an even bigger Optimus production line, which should be capable of producing tens of millions of Optimi per year.
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Tesla is improving Giga Berlin’s free “Giga Train” service for employees
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
Tesla will expand its factory shuttle service in Germany beginning January 4, adding direct rail trips from Berlin Ostbahnhof to Giga Berlin-Brandenburg in Grünheide.
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
New shuttle route
As noted in a report from rbb24, the updated service, which will start January 4, will run between the Berlin Ostbahnhof East Station and the Erkner Station at the Gigafactory Berlin complex. Tesla stated that the timetable mirrors shift changes for the facility’s employees, and similar to before, the service will be completely free. The train will offer six direct trips per day as well.
“The service includes six daily trips, which also cover our shift times. The trains will run between Berlin Ostbahnhof (with a stop at Ostkreuz) and Erkner station to the Gigafactory,” Tesla Germany stated.
Even with construction continuing at Fangschleuse and Köpenick stations, the company said the route has been optimized to maintain a predictable 35-minute travel time. The update follows earlier phases of Tesla’s “Giga Train” program, which initially connected Erkner to the factory grounds before expanding to Berlin-Lichtenberg.
-->Tesla pushes for majority rail commuting
Tesla began production at Grünheide in March 2022, and the factory’s workforce has since grown to around 11,500 employees, with an estimated 60% commuting from Berlin. The facility produces the Model Y, Tesla’s best-selling vehicle, for both Germany and other territories.
The company has repeatedly emphasized its goal of having more than half its staff use public transportation rather than cars, positioning the shuttle as a key part of that initiative. In keeping with the factory’s sustainability focus, Tesla continues to allow even non-employees to ride the shuttle free of charge, making it a broader mobility option for the area.
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Tesla Model 3 and Model Y dominate China’s real-world efficiency tests
The Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km.
Tesla’s Model 3 and Model Y once again led the field in a new real-world energy-consumption test conducted by China’s Autohome, outperforming numerous rival electric vehicles in controlled conditions.
The results, which placed both Teslas in the top two spots, prompted Xiaomi CEO Lei Jun to acknowledge Tesla’s efficiency advantage while noting that his company’s vehicles will continue refining its own models to close the gap.
Tesla secures top efficiency results
Autohome’s evaluation placed all vehicles under identical conditions, such as a full 375-kg load, cabin temperature fixed at 24°C on automatic climate control, and a steady cruising speed of 120 km/h. In this environment, the Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km, as noted in a Sina News report.
These figures positioned Tesla’s vehicles firmly at the top of the ranking and highlighted their continued leadership in long-range efficiency. The test also highlighted how drivetrain optimization, software management, and aerodynamic profiles remain key differentiators in high-speed, cold-weather scenarios where many electric cars struggle to maintain low consumption.
Xiaomi’s Lei Jun pledges to continue learning from Tesla
Following the results, Xiaomi CEO Lei Jun noted that the Xiaomi SU7 actually performed well overall but naturally consumed more energy due to its larger C-segment footprint and higher specification. He reiterated that factors such as size and weight contributed to the difference in real-world consumption compared to Tesla. Still, the executive noted that Xiaomi will continue to learn from the veteran EV maker.
“The Xiaomi SU7’s energy consumption performance is also very good; you can take a closer look. The fact that its test results are weaker than Tesla’s is partly due to objective reasons: the Xiaomi SU7 is a C-segment car, larger and with higher specifications, making it heavier and naturally increasing energy consumption. Of course, we will continue to learn from Tesla and further optimize its energy consumption performance!” Lei Jun wrote in a post on Weibo.
-->Lei Jun has repeatedly described Tesla as the global benchmark for EV efficiency, previously stating that Xiaomi may require three to five years to match its leadership. He has also been very supportive of FSD, even testing the system in the United States.
Elon Musk makes a key Tesla Optimus detail official
Tesla is improving Giga Berlin’s free “Giga Train” service for employees
