News
SpaceX’s mysterious Zuma mission ready for launch after fueling rehearsal
SpaceX’s Launch Complex-40 is nearly ready to host its second Falcon 9 launch since it was reactivated after extensive repairs and upgrades. The mission should be familiar: the Zuma payload SpaceX is tasked with launching was previously delayed in mid-November after the launch company discovered potential manufacturing defects in one or more of its carbon-composite payload fairings.
Still cloaked in intense secrecy, Zuma was originally rescheduled for liftoff on the evening of January 4th, but weather issues led SpaceX to recycle the launch to Friday, January 5th. Forecasts had initially looked promising, but weather changes and that may still be the case with the new Jan 5 date. Meanwhile, in the approximately two months separating Zuma’s present and first scheduled launch attempts, SpaceX has officially transferred all Falcon 9 launches to its newly reactivated LC-40 pad in order to free up LC-39A for Falcon Heavy’s inaugural launch attempt, currently NET January 15. Zuma’s Falcon 9 booster, number 1043, was in fact spotted being transferred from 39A’s integration facilities to LC-40 by a Kennedy Space Center tourist.
Zuma’s Falcon 9 spotted leaving 39A’s integration facilities on December 15. (Instagram /u/robhubar)
More recently, SpaceX announced that its launch team had conducted what is known as a wet dress rehearsal (WDR) with Falcon 9 1043, whereby the booster would be prepped and loaded with propellant as if it were preparing to conduct a static fire. This acts as a test of both the launch facility’s complex ground systems and the rocket’s functionality, at least short of actually igniting its nine Merlin 1D engines. It’s not entirely clear why SpaceX decided to conduct a WDR for Zuma, as the procedure is rather rare for the company, but the best explanation probably involves simple caution with a relatively untested and new launch pad, LC-40.
As of January 3, both SpaceX and CCAFS’ 45th Space Wing confirmed that the launch was now targeting January 5, with a window of opportunity from 8-10pm EST or 5-7PM PST. However, this date may also slip a day or two, hinted at by the 45th Space Wing’s “TBD” launch date for the mission. Nevertheless, the delay-beleaguered Zuma will presumably arrive soon at its unusual Earth orbit within the next several days.
Team at the Cape performed a propellant loading test of Falcon 9 on Pad 40 this morning – additional static fire test of the rocket was not necessary. Targeting January 5 launch of Zuma.
— SpaceX (@SpaceX) January 3, 2018
-->Unlike Iridium-4, which expended its flight-proven Falcon 9 first stage after liftoff, Zuma will be launching aboard a shiny, new Block 4 Falcon 9, and its boosters will attempt a recovery at SpaceX’s LZ-1 landing facility just a few miles away from LC-40. While it is entirely unclear how large the Zuma satellite(s) is/are, an LZ-1 landing essentially guarantees that it is relatively light and headed to a relatively low Earth orbit, meaning that the recovered 1043 will be a prime candidate for at least one additional reflight in its future.
Follow along on Instagram as our launch photographer Tom Cross covers SpaceX’s upcoming activities live from the Space Coast.
News
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.
-->News
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
