News
SpaceX Falcon 9 Block 5 will usher in a new era of rapid reuse rockets
Despite all missions being readily in the range of recovery, SpaceX has only attempted to recover its Falcon boosters after two of the company’s five 2018 launches. If anything, the attachment to Falcon boosters and the apparent melancholy felt by many observers when they are not recovered is a testament to the staggeringly abrupt success of SpaceX’s reusable rocketry program.
-
- Falcon Heavy’s side boosters seconds away from near-simultaneous landings at Landing Zones 1 and 2. (SpaceX)
-
- GovSat’s Falcon 9 1032 spotted in one piece by Elon Musk after a soft-landing in the Atlantic. (Elon Musk)
Aside from Falcon Heavy’s center core and 1044, each booster expended in the last several months (Iridium-4, GovSat-1, and PAZ) was aging, flight-proven, and nearing the end of its operational life: Block 3 and Block 4 Falcon 9s were simply not designed or expected to fly more than two or three times total. Their seemingly premature deaths were thus a necessary step along the path to Block 5 and truly rapid and cheap booster reuse; perhaps as pragmatic as quite literally making space for new and superior hardware at SpaceX’s many facilities. The demise of Falcon Heavy’s center core nevertheless made for a spectacular video (skip to 1:10, or watch the whole thing…).
The end (of old Falcons) is nigh
Despite the carnage in recent times, the next two weeks are likely to see several more flight-proven Falcon 9s meet their timely, watery demise, or at least complete their final flight in the case of CRS-14.
- Iridium-5 (NET March 29) will be flying atop Booster (B) 1041, previously used for Iridium-3 (Oct. 2017)
- CRS-14 (NET April 2) will make use of B1039, a booster that debuted with the launch of CRS-12 (Aug. 2017)
- Iridium-6/GRACE-FO (NET April 28) was confirmed just yesterday to be flying on B1043, the booster that launched the now-infamous Zuma spysat this January
- Lastly, SES-12 (NET April 30) will likely use B1040, which orbited the USAF’s secretive X-37B spaceplane in Sept. 2017
-
- Booster 1041 arrives in Port of San Pedro, CA in Oct. 2017 after successfully completing its first launch. (Pauline Acalin)
-
- Booster 1039 lands after successfully launching CRS-12’s Cargo Dragon into orbit. 1039 completed its final mission on Monday afternoon, April 2. (SpaceX)
-
- After landing at LZ-1, B1043 was refurbished in approximately four months. (SpaceX)
-
- Falcon 9 B1040 returns to LZ-1 after the launch of the USAF’s X-37B spaceplane. (SpaceX)
While more than a little hard to believe, this series of launches over the next 4-6 weeks may see SpaceX’s fleet of flight-proven boosters shrink to no more than two flightworthy cores – perhaps just a single Falcon 9. The launch of NASA’s exoplanet observatory TESS – set to use the brand new Falcon 9 B1045 – will likely see one additional flight after landing at LZ-1 or OCISLY in mid-April. The final flight-proven booster known to exist in a potentially flightworthy state is B1042, famous for its moderate attempt at self-immolation and Roomba-murder (correction: the Roomba murder attempt was actually a few weeks before, during the landing of SES-11’s flight-proven booster) after the successful launch of Koreasat-5A in Oct. 2017. B1042’s future is unknown at this point, however, as the post-landing fire may have damaged the booster beyond repair.
Rounding out SpaceX’s entire fleet of boosters, at least after SES-12, are the flight-proven B1045, the first-ever Block 5 booster (B1046) – flight-proven after Bangabandhu-1, and the second Block 5 booster (B1047). Assuming that Block 5’s first hot-fire testing has gone well at SpaceX’s McGregor, TX facilities, it’s probable that B1048 and perhaps B1049 will roll out of the Hawthorne factory and head to Texas for their own tests between now and then.
-->https://www.instagram.com/p/BgfboKIB17H/
TL;DR: SpaceX is betting heavily on Block 5
The purpose of this brief jaunt through the annals of SpaceX’s rocket fleet and production goals is to demonstrate just how aggressively SpaceX has bet on Block 5 – both on its success as a new and complex technological system and as an unprecedentedly reusable orbital-class rocket. If any design or manufacturing flaws are discovered in the first several Block 5 Falcon 9s, or if Block 5 turns out to be less reusable than SpaceX hopes, the company could well find its manifested launch dates slipping as flightworthy boosters – not satellites – become the bottleneck for access to orbit.
Nevertheless, SpaceX has at least six full-up Falcon 9 boosters in various stages of integration and completion at their Hawthorne factory, as well as 1046 in (or departing) Texas and 1047 presumably on its way there. SpaceX certainly has a strong track record of introducing its many upgraded iterations of Falcon 9 in the past – fingers crossed that that trend continues with Block 5. If SpaceX’s confidence still rings true a month or two from today, a new era of access to space will have truly begun, and SpaceX will be able to quite rapidly refocus a considerable portion of its workforce on getting to Mars.
-
- SpaceX Block 5 Falcon9 at McGregor, Texas [Credit: Chris G – NSF via Twitter, Reprinted with permission from NASASpaceflight.com]
-
- SpaceX continues a cautious regiment of tests for the newest Falcon 9 upgrade, Block 5. (Reddit /u/HollywoodSX)
Follow us for live updates, behind-the-scenes sneak peeks, and a sea of beautiful photos from our East and West coast photographers.
Teslarati – Instagram – Twitter
-->Tom Cross – Twitter
Pauline Acalin – Twitter
Eric Ralph – Twitter
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
