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SpaceX’s next launch could still break rocket reuse record despite more delays
After multiple delays, SpaceX’s next launch is once again ~24 hours out and the Falcon 9 booster assigned to still has a shot at breaking a world record for rocket reuse.
Originally expected to launch as early as early July, SpaceX’s South Korean ANASIS II military communications satellite slipped to July 11th, followed by several more delays to July 19th. After one (hopefully) final slip, ANASIS II is now scheduled to launch no earlier than (NET) 5 pm EDT (21:00 UTC) on Monday, July 20th.
In a sign that SpaceX’s rocket reuse program continues to make progress, the company assigned Falcon 9 booster B1058 to the launch – initially just 45 days after it debuted in support of Crew Dragon’s own May 30th astronaut launch debut.
As previously discussed on Teslarati, a 45-day turnaround would have crushed a 54-day world record held by NASA’s Space Shuttle that was set more than three decades ago. While the Space Shuttle was an orbital vehicle and likely 10-100 times more complex than SpaceX’s Falcon 9 booster, the workforce it needed to set that turnaround record was closer to 500-1000 times larger than the teams needed to reuse Falcon 9.
To “reuse” Space Shuttles and the Main Engines (SSMEs; now RS-25s) that powered them, NASA and its contractors had to extensively disassemble and reassemble the vehicles, removing and refurbishing the engines and several thruster pods before reinstalling them. Up to 4000 parts would have to be replaced each launch, while 7000 of the main engines’ 50,000 parts would also have to be replaced periodically. According to NASA, each Shuttle required at least 750,000 work hours of refurbishment and rework between flights. Per comments recently made by CEO Elon Musk, SpaceX may require just a few dozen employees and 4-6 weeks to turn a Falcon 9 booster around. That could mean that as few as 5000-10,000 work hours are required per Falcon 9 reuse, 75-150 times fewer than the Shuttle’s average.
As of now, Falcon 9 booster B1058 could still beat Space Shuttle Atlantis’ 54-day record if it launches before July 23rd. A July 20th launch would still break the Shuttle’s record by three days despite roughly three weeks of ANASIS II mission delays. Notably, most – if not all – of those delays appear to have been caused by issues found on the second stage, new hardware that is expended after every launch. Falcon 9 B1058 completed a successful static fire test on July 11th, just 42 days after it launched astronauts into orbit and just 38 days after the booster returned to dry land after its first flight.
With a little luck, B1058’s proven potential for smashing reuse records will mean that SpaceX is able to rapidly turn the rocket around for future launches, assuming successful landings. For now, SpaceX’s next launch is on track to lift off NET 5 pm EDT (21:00 UTC) on July 20th. In a rarity, SpaceX has a nearly four-hour window to launch, leaving plenty of flexibility if weather or minor technical bugs require some additional time. The company’s official webcast will begin roughly 15 minutes prior to liftoff.
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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
