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SpaceX’s first Falcon 9 Block 5 landing failure caught on video after launch success
In an extraordinary bit of live footage, SpaceX’s first Falcon 9 Block 5 launch of the Cargo Dragon spacecraft was topped by a spectacular partial failure of the Block 5 booster during its attempted recovery at Landing Zone-1 (LZ-1).
Despite this off-nominal recovery, Falcon 9 successfully placed Cargo Dragon into what John Insprucker deemed a highly accurate orbit, leaving the spacecraft to make its way to the International Space Station between now and Saturday. CEO Elon Musk further noted that Falcon 9 B1050 – despite landing in the ocean – was intact and still transmitting telemetry, potentially allowing SpaceX to still recovery the forlorn rocket.
Absolutely wild on-the-ground footage of @spacex Falcon 9 B1050's partially failed recovery, courtesy of Twitch streamer DasValdez. Keep in mind, of course, that the main mission – launching Cargo Dragon to orbit – was fully successful. pic.twitter.com/fKq7T79oIH
— Eric Ralph (@13ericralph31) December 5, 2018
What exactly went wrong is entirely unclear but roughly 30 seconds before a planned landing at LZ-1, Falcon 9 B1050 – shown live on SpaceX’s webcast – began to spin at an increasingly rapid pace, visibly losing some of its aerodynamic control authority before SpaceX cut the live feed. In the background, viewers could still hear the team on-console making callouts as the rocket’s landing burn started, culminating in a call for the landing team to “move to contingency procedure[s]”, the only SpaceX affirmation that something went wrong.
-->Above all else, it’s important to remember that the primary mission – sending Cargo Dragon to the ISS – continues to proceed nominally. In other words, Falcon 9 performed fine during ascent and only exhibited off-nominal behavior during the booster’s attempted landing after separating from the upper stage and Dragon payload.
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- Despite major problems, Falcon 9 somehow pulled off a successful soft-landing in the Atlantic. (Tom Cross)
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- Falcon 9 B1050 fought til the end, coming to a shockingly soft landing despite spinning rapidly. (Tom Cross)
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- CRS-16 one minute before launch. (SpaceX)
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- Falcon 9 B1050 seen shortly before a grid fin lost control, throwing the rocket into a near-uncontrollable spin. (SpaceX)
CEO Elon Musk took to Twitter soon after the breathtaking loss of control and expected landing time, stating that the SpaceX team currently pegged the failure on a grid fin’s stalled hydraulic fin, which ultimately caused the wild spinning seen in the webcast. Although it is almost without a doubt too early to actually know if the booster is in good enough condition to ever fly again, Musk seemed to directly suggest that it could eventually relaunch in support of an “internal SpaceX mission”, basically either Starlink or tech development.
Grid fin hydraulic pump stalled, so Falcon landed just out to sea. Appears to be undamaged & is transmitting data. Recovery ship dispatched.
— Elon Musk (@elonmusk) December 5, 2018
-->Stay tuned as SpaceX and Musk continue to offer updates on the continuing Cargo Dragon mission and attempted Falcon 9 recovery. SpaceX’s webcast recap can be viewed below.
For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet check out our brand new LaunchPad and LandingZone newsletters!
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Tesla Semi factory looks almost complete during Thanksgiving weekend
Based on recent drone videos, the Tesla Semi factory looks practically ready to start operations.
It appears that the Tesla Semi factory near Giga Nevada is already hard at work preparing for the initial production of the Class 8 all-electric truck. This was, at least, hinted at in a recent drone flyover of the facility from a longtime watcher.
The Tesla Semi factory after Thanksgiving
Drone operator and Tesla Semi advocate @HinrichsZane recently shared some footage he captured of the upcoming facility during the Thanksgiving weekend. Based on his video, it appears that Tesla gave its employees in the area the weekend off. One thing is evident from the video, however, and that is the fact that the Tesla Semi factory looks practically ready to start operations.
The Tesla Semi watcher did point out that the electric vehicle maker is still busy bringing in production equipment into the facility itself. Once these are installed, it would not be surprising if initial production of the Tesla Semi begins.
A new Tesla Semi
The upcoming completion of the Tesla Semi factory near Gigafactory Nevada seems all but inevitable in the coming months. What would be especially interesting, however, would be the vehicles that would be produced on the site. During Elon Musk’s presentation at the 2025 Annual Shareholder Meeting, a glimpse of the production Tesla Semi was shown, and it looks quite a bit different than the Class 8 all-electric truck’s classic appearance.
As could be seen in the graphic from the CEO’s presentation, the updated Tesla Semi will feature slim lightbar headlights similar to the new Tesla Model Y, Cybertruck, and the Cybercab. Tesla also teased a number of aerodynamic improvements that increased the truck’s efficiency to 1.7 kWh per mile. Extended camera units, seemingly for FSD, could also be seen in the graphic.
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Tesla scores major hire as Apple scientist moves to Optimus team
Chen, who advanced from individual contributor to technical lead during his time at Apple, noted that he was blown away by Tesla’s efforts and synergy.
Former Apple research scientist Yilun Chen has left the tech giant to join Tesla’s Optimus AI team. Chen, who advanced from individual contributor to technical lead during his time at Apple, noted that he was blown away by Tesla’s efforts and synergy.
Apple veteran closes a major chapter
In a farewell note, Yilun Chen reflected on his tenure at Apple as a period defined by rapid growth and exposure to notable internal projects, some of which remain unreleased. His roles spanned engineering, research, early product incubation, and hands-on prototyping, allowing him to build expertise across both mature and emerging teams.
Chen credited mentors, colleagues, and cross-functional collaborators for shaping his trajectory, calling the experience unforgettable and emphasizing how each team taught him different lessons about scaling technology, guiding product vision, and navigating fast-moving research environments. “Each role has offered me invaluable unique lessons… My deepest gratitude goes to my colleagues, mentors and friends,” he wrote.
Tesla’s Optimus lab secured the hire
Chen said the move to Tesla was driven by the momentum surrounding Optimus, a humanoid robot powered by LLM-driven reasoning and Physical AI. After visiting Tesla’s Optimus lab, he admitted that he was “totally blown away by the scale and sophistication of the Optimus lab and deep dedication of people when I got to visit the office.”
His first week at Tesla, he noted, involved spontaneous deep-tech discussions, a flat team structure, rapid prototyping cycles, and what he called a “crazy ideas with super-fast iterations” culture. Chen emphasized that the team’s ambition, as well as its belief that humanoid robots are now within reach, creates an energy level that feels aimed at changing the world.
-->“You can feel the energy to change the world here,” he wrote in a post on social media.
Elon Musk
Elon Musk gives nod to SpaceX’s massive, previously impossible feat
It was the booster’s 30th flight, a scenario that seemed impossible before SpaceX became a dominant force in spaceflight.
Elon Musk gave a nod to one of SpaceX’s most underrated feats today. Following the successful launch of the Transporter-15 mission, SpaceX seamlessly landed another Falcon 9 booster on a droneship in the middle of the ocean.
It was the booster’s 30th flight, a scenario that seemed impossible before SpaceX became a dominant force in spaceflight.
Elon Musk celebrates a veteran Falcon 9 booster’s feat
SpaceX completed another major milestone for its Smallsat Rideshare program on Friday, successfully launching and deploying 140 spacecraft aboard a Falcon 9 from Vandenberg Space Force Base. The mission, known as Transporter-15, lifted off two days later than planned after a scrub attributed to a ground systems issue, according to SpaceFlight Now. SpaceX confirmed that all payloads designed to separate from the rocket were deployed as planned.
The Falcon 9 used for this flight was booster B1071, one of SpaceX’s most heavily flown rockets. With its 30th mission completed, it becomes the second booster in SpaceX’s fleet to reach that milestone. B1071’s manifest includes five National Reconnaissance Office missions, NASA’s SWOT satellite, and several previous rideshare deployments, among others. Elon Musk celebrated the milestone on X, writing “30 flights of the same rocket!” in his post.
Skeptics once dismissed reusability as unfeasible
While rocket landings are routine for SpaceX today, that was not always the case. Industry veterans previously questioned whether reusable rockets could ever achieve meaningful cost savings or operational reliability, often citing the Space Shuttle’s partial reusability as evidence of failure.
-->In 2016, Orbital ATK’s Ben Goldberg argued during a panel that even if rockets could be reusable, they do not make a lot of sense. He took issue with Elon Musk’s claims at the time, Ars Technica reported, particularly when the SpaceX founder stated that fuel costs account for just a fraction of launch costs.
Goldberg noted that at most, studies showed only a 30% cost reduction for low-Earth orbit missions by using a reusable rocket. “You’re not going to get 100-fold. These numbers aren’t going to change by an order of magnitude. They’re just not. That’s the state of where we are today,” he said.
Former NASA official Dan Dumbacher, who oversaw the Space Launch System, expressed similar doubts in 2014, implying that if NASA couldn’t make full reusability viable, private firms like SpaceX faced steep odds.
Tesla Semi factory looks almost complete during Thanksgiving weekend
Tesla scores major hire as Apple scientist moves to Optimus team
