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SpaceX wraps up a decade of reusable rocketry with fastest booster recovery yet
SpaceX has completed its 13th and final launch and landing of the year and decade, marked by a Falcon 9 booster’s successful return to Port Canaveral and subsequent processing to prepare it for another orbital-class mission.
Over the course of that recovery, SpaceX broke the record for the fastest Falcon 9 processing by several hours, a small but significant step towards the company’s ultimate goal of launching and landing the same Falcon 9 booster in less than 24 hours. Additionally, SpaceX appears to have finished processing booster B1056 on December 21st, the 4th anniversary of Falcon 9’s first successful landing after an orbital-class launch.
Since that first success on December 21st, 2015, SpaceX has rapidly moved through several distinct iterations of Falcon hardware, constantly improving components, systems, and the overall fit, finish, and reliability of the rocket. Over the last four years, SpaceX has landed an incredible 47 Falcon 9 and Falcon Heavy boosters as part of 60 orbital-class launches, while the company recently launched Falcon 9 B1048 for the fourth time and flew the same two Falcon Heavy boosters in April and June. Ultimately, 2019 has been a spectacularly successful year for SpaceX, and – by the numbers – 2020 is set to be several times more ambitious, still.
On December 20th, less than a day after arriving in Port Canaveral, SpaceX technicians began the process of retracting Falcon 9 booster B1056’s four deployed landing legs. As it turns out, B1056 – returning to port for the second time after its third launch – became the first Falcon 9 booster to have all of its landing legs successfully (and semi-permanently) retracted in May 2019. To accomplish the feat, SpaceX designed a custom retraction mechanism that simultaneously serves as the crane jig used to lift the booster while vertical.
“The crux of the need for a relatively complex crane-and-jig method of leg retraction rests on SpaceX’s landing leg design. Put simply, after rapidly deploying with a combination of gravity and hydraulics, Falcon 9 landing legs have no built-in way to return to their stowed state. Each of the four legs are quite large, weighing around 600 kg (1300 lb) and stretching about 10m (33 ft) from hinge to tip. They use an intricate telescoping carbon fiber deployment mechanism to give them legs enough strength to stand up to the stresses of Falcon 9 booster landings.
Combined, the legs’ size and telescoping mechanism makes the addition of an onboard retraction mechanism impractical. All the needed hardware would struggle to find a good place for installation and would quite literally be dead weight during launches and landings, stealing from Falcon 9/Heavy payload capacity and generally serving no purpose until a booster has been lifted off the ground with a giant crane.”
Teslarati — May 7th, 2019
Impressively, SpaceX took less than an hour and a half to successfully retract all four of thrice-flown Falcon 9 B1056’s also thrice-flown landing legs. Less than three hours after the rocket’s legs were snugly retracted, SpaceX immediately attached a second crane and brought the booster horizontal. Altogether, this made Falcon 9 B1056’s third recovery the fastest SpaceX has ever performed by 3-6 hours – seemingly small progress but still no mean feat.
SpaceX’s fastest-ever Falcon 9 recovery – from the drone ship berthing to the booster departing the port on a transporter – occurred with B1049 after its third launch and landing, taking just 2.01 days (48.25 hours). Falcon 9 B1056’s third recovery appears to have beaten that record by at least several hours, brought horizontal and installed on a SpaceX transporter perhaps less than 1.75 days (42 hours) after arriving in port – more than 10% faster than B1049’s previous record.
Meanwhile, SpaceX lifted a fairing half recovered off the surface of the Atlantic Ocean by GO Ms. Tree, appearing unharmed after having potentially been dropped when the ship’s secondary (fairing) fishing net tore while moving the Falcon 9 hardware.
With any luck, that fairing half will be in good enough shape to be reused on a future Starlink mission, seemingly unlikely but proven to be well within the realm of possibility after SpaceX’s very first fairing reuse involved two halves recovered off the ocean surface after Falcon Heavy Block 5’s April 2019 debut. B1056, however, is all but guaranteed to fly again – this time on its fourth launch – in the near future. SpaceX has dozens of launches planned in 2020, so there will be plenty of opportunities.
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Tesla FSD (Supervised) fleet passes 8.4 billion cumulative miles
The figure appears on Tesla’s official safety page, which tracks performance data for FSD (Supervised) and other safety technologies.
Tesla’s Full Self-Driving (Supervised) system has now surpassed 8.4 billion cumulative miles.
The figure appears on Tesla’s official safety page, which tracks performance data for FSD (Supervised) and other safety technologies.
Tesla has long emphasized that large-scale real-world data is central to improving its neural network-based approach to autonomy. Each mile driven with FSD (Supervised) engaged contributes additional edge cases and scenario training for the system.
The milestone also brings Tesla closer to a benchmark previously outlined by CEO Elon Musk. Musk has stated that roughly 10 billion miles of training data may be needed to achieve safe unsupervised self-driving at scale, citing the “long tail” of rare but complex driving situations that must be learned through experience.
The growth curve of FSD Supervised’s cumulative miles over the past five years has been notable.
As noted in data shared by Tesla watcher Sawyer Merritt, annual FSD (Supervised) miles have increased from roughly 6 million in 2021 to 80 million in 2022, 670 million in 2023, 2.25 billion in 2024, and 4.25 billion in 2025. In just the first 50 days of 2026, Tesla owners logged another 1 billion miles.
At the current pace, the fleet is trending towards hitting about 10 billion FSD Supervised miles this year. The increase has been driven by Tesla’s growing vehicle fleet, periodic free trials, and expanding Robotaxi operations, among others.
With the fleet now past 8.4 billion cumulative miles, Tesla’s supervised system is approaching that threshold, even as regulatory approval for fully unsupervised deployment remains subject to further validation and oversight.
Elon Musk
Elon Musk fires back after Wikipedia co-founder claims neutrality and dubs Grokipedia “ridiculous”
Musk’s response to Wales’ comments, which were posted on social media platform X, was short and direct: “Famous last words.”
Elon Musk fired back at Wikipedia co-founder Jimmy Wales after the longtime online encyclopedia leader dismissed xAI’s new AI-powered alternative, Grokipedia, as a “ridiculous” idea that is bound to fail.
Musk’s response to Wales’ comments, which were posted on social media platform X, was short and direct: “Famous last words.”
Wales made the comments while answering questions about Wikipedia’s neutrality. According to Wales, Wikipedia prides itself on neutrality.
“One of our core values at Wikipedia is neutrality. A neutral point of view is non-negotiable. It’s in the community, unquestioned… The idea that we’ve become somehow ‘Wokepidea’ is just not true,” Wales said.
When asked about potential competition from Grokipedia, Wales downplayed the situation. “There is no competition. I don’t know if anyone uses Grokipedia. I think it is a ridiculous idea that will never work,” Wales wrote.
After Grokipedia went live, Larry Sanger, also a co-founder of Wikipedia, wrote on X that his initial impression of the AI-powered Wikipedia alternative was “very OK.”
“My initial impression, looking at my own article and poking around here and there, is that Grokipedia is very OK. The jury’s still out as to whether it’s actually better than Wikipedia. But at this point I would have to say ‘maybe!’” Sanger stated.
Musk responded to Sanger’s assessment by saying it was “accurate.” In a separate post, he added that even in its V0.1 form, Grokipedia was already better than Wikipedia.
During a past appearance on the Tucker Carlson Show, Sanger argued that Wikipedia has drifted from its original vision, citing concerns about how its “Reliable sources/Perennial sources” framework categorizes publications by perceived credibility. As per Sanger, Wikipedia’s “Reliable sources/Perennial sources” list leans heavily left, with conservative publications getting effectively blacklisted in favor of their more liberal counterparts.
As of writing, Grokipedia has reportedly surpassed 80% of English Wikipedia’s article count.
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Tesla Sweden appeals after grid company refuses to restore existing Supercharger due to union strike
The charging site was previously functioning before it was temporarily disconnected in April last year for electrical safety reasons.
Tesla Sweden is seeking regulatory intervention after a Swedish power grid company refused to reconnect an already operational Supercharger station in Åre due to ongoing union sympathy actions.
The charging site was previously functioning before it was temporarily disconnected in April last year for electrical safety reasons. A temporary construction power cabinet supplying the station had fallen over, described by Tesla as occurring “under unclear circumstances.” The power was then cut at the request of Tesla’s installation contractor to allow safe repair work.
While the safety issue was resolved, the station has not been brought back online. Stefan Sedin, CEO of Jämtkraft elnät, told Dagens Arbete (DA) that power will not be restored to the existing Supercharger station as long as the electric vehicle maker’s union issues are ongoing.
“One of our installers noticed that the construction power had been backed up and was on the ground. We asked Tesla to fix the system, and their installation company in turn asked us to cut the power so that they could do the work safely.
“When everything was restored, the question arose: ‘Wait a minute, can we reconnect the station to the electricity grid? Or what does the notice actually say?’ We consulted with our employer organization, who were clear that as long as sympathy measures are in place, we cannot reconnect this facility,” Sedin said.
The union’s sympathy actions, which began in March 2024, apply to work involving “planning, preparation, new connections, grid expansion, service, maintenance and repairs” of Tesla’s charging infrastructure in Sweden.
Tesla Sweden has argued that reconnecting an existing facility is not equivalent to establishing a new grid connection. In a filing to the Swedish Energy Market Inspectorate, the company stated that reconnecting the installation “is therefore not covered by the sympathy measures and cannot therefore constitute a reason for not reconnecting the facility to the electricity grid.”
Sedin, for his part, noted that Tesla’s issue with the Supercharger is quite unique. And while Jämtkraft elnät itself has no issue with Tesla, its actions are based on the unions’ sympathy measures against the electric vehicle maker.
“This is absolutely the first time that I have been involved in matters relating to union conflicts or sympathy measures. That is why we have relied entirely on the assessment of our employer organization. This is not something that we have made any decisions about ourselves at all.
“It is not that Jämtkraft elnät has a conflict with Tesla, but our actions are based on these sympathy measures. Should it turn out that we have made an incorrect assessment, we will correct ourselves. It is no more difficult than that for us,” the executive said.
Tesla FSD (Supervised) fleet passes 8.4 billion cumulative miles
Elon Musk fires back after Wikipedia co-founder claims neutrality and dubs Grokipedia “ridiculous”
