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SpaceX’s next Falcon Heavy two-thirds done as side booster #2 leaves factory
First posted to a SpaceX-focused Facebook group by member Eric Schmidt, Falcon Heavy Flight 2’s second side booster (of two) was spotted eastbound in Arizona on December 3rd, partway through a journey from SpaceX’s Hawthorne, CA factory to its McGregor, TX testing facilities.
This is the second (known) Falcon Heavy-related booster spotted in less than a month and an incontrovertible sign that the company’s second-ever Falcon Heavy launch is perhaps just a handful of months away, with both side boosters now likely to be present in Florida by January 2019 barring unforeseen developments.
Look who was waving at passing planes over McGregor today!
A Falcon Heavy side booster on the McGregor test stand for a static fire test. pic.twitter.com/S7af6b0gHk
— NSF – NASASpaceflight.com (@NASASpaceflight) November 18, 2018
This second booster appearance follows on the heels of the first Falcon Heavy booster spotting on November 9-10, confirming that – at a minimum – two of the next rocket’s three first stage boosters have finish production and are now focused on completing their separate hot-fire acceptance tests at McGregor. Owing to the ironic fact that the center core – dramatically more complex than its pointy-nosed side core brethren – is far harder to discern while in transport, it’s even possible that the second side core spotting is actually the third new Falcon Heavy booster to depart SpaceX’s factory. The above booster was apparently the second SpaceX first stage to make its way east through Arizona in the week prior to its arrival, so that may well be the case.
SpaceX's second Falcon Heavy is slowly but surely coming together 😀 https://t.co/AYJsQ8Mld5
— Eric Ralph (@13ericralph31) November 13, 2018
While Falcon Heavy side boosters do sport easily recognizable nosecones, they apparently are able to be modified from a Falcon 9 booster to a side booster with no more than a week or two’s work. On the other hand, the rocket’s center booster is dramatically more complex and requires an entirely new custom rocket be built from scratch thanks to the extreme loads it must survive when the two side boosters channel all of their thrust directly into the center core during launch.
However, until the arm-like mechanisms that connect the center stage to its two side boosters are attached, it’s extremely difficult to discern between a normal Falcon 9 booster and a Falcon Heavy center stage. Until a center core is more or less unwrapped and showing off its octaweb or unusual bumps around the interstage, its identity is likely to remain a secret. In the past three months, no fewer than four Falcon boosters arrived at Cape Canaveral, while only one (or maybe two) of them have launched in the time since their arrival.
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- SpaceX’s first Falcon Heavy prepares for launch. (SpaceX)
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- Falcon Heavy ahead of its inaugural launch. (SpaceX)
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- SpaceX’s Falcon Heavy prepares for the huge rocket’s inaugural launch. (SpaceX)
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- Falcon Heavy just prior to its first-ever integrated static fire test. (SpaceX)
Given that both side boosters have traveled from California to McGregor, it’s almost certain that Falcon Heavy will fly for the second time with all-new Block 5 hardware, including all three boosters and the upper stage. Most importantly, a Block 5 version of the non-interchangeable center stage should ultimately be able to launch multiple times with zero or minimal refurbishment and repairs, potentially making Falcon Heavy for more viable from a production and internal cost perspective. For a rocket that may only ever launch twice per year, one or two custom center cores could be all that is needed over the vehicle’s operational lifetime, save for any potential launch contract that requires expendable performance.
Ultimately, this second Falcon Heavy booster spotting in less than four weeks is a thrilling sign that SpaceX is pushing extremely hard to have the rocket’s next iteration integrated and ready to launch as soon as possible, perhaps as early as Q1 2019. As its two side boosters begin to arrive in Florida, we should start to have a better idea of when exactly the massive rocket’s second launch might be.
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Elon Musk
Elon Musk and Tesla AI Director share insights after empty driver seat Robotaxi rides
The executives’ unoccupied tests hint at the rapid progress of Tesla’s unsupervised Robotaxi efforts.
Tesla CEO Elon Musk and AI Director Ashok Elluswamy celebrated Christmas Eve by sharing personal experiences with Robotaxi vehicles that had no safety monitor or occupant in the driver’s seat. Musk described the system’s “perfect driving” around Austin, while Elluswamy posted video from the back seat, calling it “an amazing experience.”
The executives’ unoccupied tests hint at the rapid progress of Tesla’s unsupervised Robotaxi efforts.
Elon and Ashok’s firsthand Robotaxi insights
Prior to Musk and the Tesla AI Director’s posts, sightings of unmanned Teslas navigating public roads were widely shared on social media. One such vehicle was spotted in Austin, Texas, which Elon Musk acknowleged by stating that “Testing is underway with no occupants in the car.”
Based on his Christmas Eve post, Musk seemed to have tested an unmanned Tesla himself. “A Tesla with no safety monitor in the car and me sitting in the passenger seat took me all around Austin on Sunday with perfect driving,” Musk wrote in his post.
Elluswamy responded with a 2-minute video showing himself in the rear of an unmanned Tesla. The video featured the vehicle’s empty front seats, as well as its smooth handling through real-world traffic. He captioned his video with the words, “It’s an amazing experience!”
Towards Unsupervised operations
During an xAI Hackathon earlier this month, Elon Musk mentioned that Tesla owed be removing Safety Monitors from its Robotaxis in Austin in just three weeks. “Unsupervised is pretty much solved at this point. So there will be Tesla Robotaxis operating in Austin with no one in them. Not even anyone in the passenger seat in about three weeks,” he said. Musk echoed similar estimates at the 2025 Annual Shareholder Meeting and the Q3 2025 earnings call.
Considering the insights that were posted Musk and Elluswamy, it does appear that Tesla is working hard towards operating its Robotaxis with no safety monitors. This is quite impressive considering that the service was launched just earlier this year.
Elon Musk
Starlink passes 9 million active customers just weeks after hitting 8 million
The milestone highlights the accelerating growth of Starlink, which has now been adding over 20,000 new users per day.
SpaceX’s Starlink satellite internet service has continued its rapid global expansion, surpassing 9 million active customers just weeks after crossing the 8 million mark.
The milestone highlights the accelerating growth of Starlink, which has now been adding over 20,000 new users per day.
9 million customers
In a post on X, SpaceX stated that Starlink now serves over 9 million active users across 155 countries, territories, and markets. The company reached 8 million customers in early November, meaning it added roughly 1 million subscribers in under seven weeks, or about 21,275 new users on average per day.
“Starlink is connecting more than 9M active customers with high-speed internet across 155 countries, territories, and many other markets,” Starlink wrote in a post on its official X account. SpaceX President Gwynne Shotwell also celebrated the milestone on X. “A huge thank you to all of our customers and congrats to the Starlink team for such an incredible product,” she wrote.
That growth rate reflects both rising demand for broadband in underserved regions and Starlink’s expanding satellite constellation, which now includes more than 9,000 low-Earth-orbit satellites designed to deliver high-speed, low-latency internet worldwide.
Starlink’s momentum
Starlink’s momentum has been building up. SpaceX reported 4.6 million Starlink customers in December 2024, followed by 7 million by August 2025, and 8 million customers in November. Independent data also suggests Starlink usage is rising sharply, with Cloudflare reporting that global web traffic from Starlink users more than doubled in 2025, as noted in an Insider report.
Starlink’s momentum is increasingly tied to SpaceX’s broader financial outlook. Elon Musk has said the satellite network is “by far” the company’s largest revenue driver, and reports suggest SpaceX may be positioning itself for an initial public offering as soon as next year, with valuations estimated as high as $1.5 trillion. Musk has also suggested in the past that Starlink could have its own IPO in the future.
News
NVIDIA Director of Robotics: Tesla FSD v14 is the first AI to pass the “Physical Turing Test”
After testing FSD v14, Fan stated that his experience with FSD felt magical at first, but it soon started to feel like a routine.
NVIDIA Director of Robotics Jim Fan has praised Tesla’s Full Self-Driving (Supervised) v14 as the first AI to pass what he described as a “Physical Turing Test.”
After testing FSD v14, Fan stated that his experience with FSD felt magical at first, but it soon started to feel like a routine. And just like smartphones today, removing it now would “actively hurt.”
Jim Fan’s hands-on FSD v14 impressions
Fan, a leading researcher in embodied AI who is currently solving Physical AI at NVIDIA and spearheading the company’s Project GR00T initiative, noted that he actually was late to the Tesla game. He was, however, one of the first to try out FSD v14.
“I was very late to own a Tesla but among the earliest to try out FSD v14. It’s perhaps the first time I experience an AI that passes the Physical Turing Test: after a long day at work, you press a button, lay back, and couldn’t tell if a neural net or a human drove you home,” Fan wrote in a post on X.
Fan added: “Despite knowing exactly how robot learning works, I still find it magical watching the steering wheel turn by itself. First it feels surreal, next it becomes routine. Then, like the smartphone, taking it away actively hurts. This is how humanity gets rewired and glued to god-like technologies.”
The Physical Turing Test
The original Turing Test was conceived by Alan Turing in 1950, and it was aimed at determining if a machine could exhibit behavior that is equivalent to or indistinguishable from a human. By focusing on text-based conversations, the original Turing Test set a high bar for natural language processing and machine learning.
This test has been passed by today’s large language models. However, the capability to converse in a humanlike manner is a completely different challenge from performing real-world problem-solving or physical interactions. Thus, Fan introduced the Physical Turing Test, which challenges AI systems to demonstrate intelligence through physical actions.
Based on Fan’s comments, Tesla has demonstrated these intelligent physical actions with FSD v14. Elon Musk agreed with the NVIDIA executive, stating in a post on X that with FSD v14, “you can sense the sentience maturing.” Musk also praised Tesla AI, calling it the best “real-world AI” today.
Elon Musk and Tesla AI Director share insights after empty driver seat Robotaxi rides
Starlink passes 9 million active customers just weeks after hitting 8 million
