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SpaceX to fly ‘hybrid’ Falcon 9 with Block 4 and 5 stages on June 4 launch
According to SES chief technical officer Martin Halliwell, SpaceX intends to “thread the needle” with a unique hybrid Falcon 9 launch of his company’s SES-12 communications satellite on June 4th.
In the case of this launch, Halliwell’s “needle” refers to unsavory weather conditions present at Florida’s Cape Canaveral launch facilities, although weather appears to be improving significantly over the next few days. Originally scheduled for launch on May 24, SES-12 was pushed to May 31, June 1st, and finally June 4th, according to a tweet from SpaceX earlier this morning. Minor difficulties with hardware in the Falcon 9’s Block 5 upper stage required additional troubleshooting and were ultimately magnified by the fact that Cape Canaveral Air Force Station’s range is technically supposed to be closed for launches at the moment, a shutdown of two or so weeks meant to allow the station’s range to conduct routine maintenance and install upgraded hardware (radar, meteorology, helicopter maintenance, avionics, software, etc).
https://twitter.com/_TomCross_/status/1002217744421609474
As such, it’s unlikely that the minor upper stage hardware issues referenced by SpaceX literally entailed a 72 hour delay. In fact, it’s fairly unique for the Eastern Range to go so out of their way to accommodate launches well within a closure period – May 28 to June 9 – scheduled months in advance. Once SpaceX’s SES-12 mission is completed, the range will likely try to complete necessary maintenance ops.
Falcon 9 B1040 returns to Landing Zone-1 after launching the X-37B spaceplane. It’s second and final flight will be with the SES-12 communications satellite. (SpaceX)
In a press conference hosted by the satellite operator SES, CTO Martin Halliwell further discussed some of the more technical aspects of the imminent SpaceX launch, waxing poetic about the particular flight-proven rocket’s fusion of a Block 4 Falcon 9 first stage and a Block 5 upper stage. With its “monster” Block 5 Merlin Vacuum engine, Halliwell noted that the extra performance provided by the upgraded second stage’s higher thrust, the expendable first stage launch profile, and the removal of its grid fins and landing legs could enable as much as seven years of additional operational life for the massive communications satellite.
Although the CTO did not explicitly confirm it, his comments indicate that this launch of the Block 5 upper stage – likely the third after Falcon 9 Block 5’s May 11 debut – may operate at 5% higher thrust for the first time, something briefly discussed by SpaceX CEO Elon Musk in a press call before the Block 5 debut. In that call, the CEO stated that the upgraded vacuum version of Merlin would fly with its thrust downrated by 5% to avoid risking a customer’s payload while ensuring that the hardware and software upgrades were functioning as intended. It appears that the data and experience provided by the Bangabandhu-1 mission’s downrated thrust profile was extremely encouraging, leading SpaceX to open the throttle a bit more with the SES-12 mission, so to speak.
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- Falcon 9 1046’s Block 5 upper stage shown on its May 11 debut launch with Bangabandhu-1. SpaceX’s rockets already provide rich telemetry live to the company’s launch controllers. (SpaceX)
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- Falcon 9 Block 5 completed its first launch on May 11, carrying the Bangabandhu-1 communications satellite to geostationary transfer orbit. (Tom Cross)
Falcon 9 B1040, the reused booster tasked with launching the second stage and satellite above Earth’s atmosphere, previously flew on September 7, 2017, launching the USAF’s secretive X-37B spaceplane into low Earth orbit. Teslarati photographer Tom Cross will capture the booster’s last flight around 12:30am on June 4th.
The Tesla Semi was spotted mounted with ground truth validation equipment as the company nears its looming launch. The Semi is Tesla’s Class 8 all-electric truck, and has been utilized in its earlier stages by many companies like PepsiCo. and Frito-Lay, who have been using it in a pilot program.
The Semi was spotted in Sunnyvale, California, and sports a typical ground truth validation unit that Tesla routinely uses on its vehicles. Ground truth validation is essentially the process of training supervised algorithms to ensure they can perform reliably. Tesla typically performs this on vehicles that are being released soon:
Spotted the new semi adorned with ground truthing equipment. Haven’t seen anyone post this so figured I’d share.
The future is autonomous!!@SawyerMerritt @wholemars pic.twitter.com/qkPDHPUQZ6
— Danny (@dannywinner1) June 21, 2026
The Semi being spotted with this type of validation rig is important because it means the company is working on solidifying a Full Self-Driving model for its commercial vehicle offering. This would be a massive development for not only Tesla but also the logistics industry as a whole.
There are strict regulations on driving hours for commercial truck drivers, and autonomy is a way to potentially combat these issues. FSD is already a widely effective way that owners of typical passenger vehicles take stress out of travel. Even launching a semi-autonomous platform for truck drivers to use to increase safety, reduce fatigue, and increase productivity would be a huge development.
Tesla Semi gets strange-but-understandable comparison from Jay Leno
The Semi has already proven to be an ideal solution for companies that use commercial logistics. It has increased efficiency and reduced operating costs for many companies that have been able to use it in pilot programs.
There are expected to be some bumps along the way. Tesla saw some challenges with FSD on the Cybertruck, as it had never had a vehicle with cameras at that height, so some of the features with FSD were not immediately available. Just a week ago, Tesla launched Actually Smart Summon (ASS) for Cybertruck, nearly three years after the vehicle was first delivered to customers.
President Donald Trump unveiled an upgraded Boeing 747-8 at Joint Base Andrews on June 19, 2026, describing the Qatar-gifted aircraft as an interim Air Force One equipped with advanced communications systems, including Starlink, Elon Musk’s SpaceX satellite internet service.
The plane, valued at around $400 million and modified for presidential use, serves as a bridge until the delayed VC-25B replacements arrive. Trump highlighted its luxury features and new technology during remarks to service members.
Trump stated:
“We have communication equipment up there that nobody’s ever seen before. It’s the highest level and, uh, including Starlink. My friend Elon is going to be very happy, but, uh, Starlink and we have, uh, four or five different sets of double and triple communications like people haven’t seen.”
He added:
“And it represents what can happen with hard work, innovation, and aggressive timelines because we did this quickly and yet there’s never been communication like is on this plane.”
🚨 President Trump confirmed today that the new Air Force One is equipped with Starlink:
“We have communication equipment up there that nobody’s ever seen before, it’s the highest level and including Starlink…my friend Elon is going to be very happy.” pic.twitter.com/IhkDmtr5hL
— TESLARATI (@Teslarati) June 20, 2026
The aircraft features a redesigned red, white, and blue livery and has been outfitted with Starlink satellite connectivity alongside other secure systems.
Trump praised the plane’s uniqueness, calling it among the world’s most luxurious. The gift from Qatar and subsequent modifications have drawn attention, with the jet positioned as a solution for presidential travel. It is expected to support operations, including potential ceremonial roles such as Fourth of July flyovers.
The event marked the formal introduction of the converted jet, which will help maintain capabilities while the primary Air Force One fleet undergoes modernization. Defense observers note the inclusion of commercial satellite technology like Starlink as part of efforts to ensure resilient communications, crucial to keep the country running as the President is in the sky.
President Trump’s comments underscored appreciation for rapid upgrades and innovation in equipping the aircraft. The plane remains a U.S. government asset and is slated for eventual transfer related to presidential library purposes after its service.
Tesla just gave what is perhaps its biggest signal yet that the launch of the Cybercab, its autonomous ride-hailing-geared car, is imminent.
The Cybercab has been spotted outside of Gigafactory Texas in massive numbers over the past few days, with hundreds of units being stored on property just days after the vehicle received a Certificate of Conformity from the EPA.
Today, things were a bit different.
Cybercabs spotted on Giga Texas property today had an addition: a Cybercab decal on the side, reminiscent of the “Robotaxi” ones that were placed on Model Ys just as the company launched its ride-sharing platform about a year ago.
Giga Texas drone operator Joe Tegtmeyer noticed the change today:
Tesla Cybercabs are now getting “Cybercab” logos on the side of them!
Tesla did the same with Model Ys that were given “Robotaxi” logos: https://t.co/DanANtw1m7 pic.twitter.com/FqOhH0S9Ks
— TESLARATI (@Teslarati) June 19, 2026
Tesla could be signaling that the Cybercab is preparing to enter the Robotaxi fleet in the coming weeks or months with this move. It seems more symbolic than anything; Tesla is ready to throw Cybercabs in the ride-hailing platform just as it did with Model Ys last year.
The addition of the Certificate of Conformity awarded to the Cybercab is another major factor working to Tesla’s advantage. The company now has permission from the EPA to allow the vehicle to operate on public roads and enter the chain of commerce. It’s officially street legal.
Tesla Cybercab specs revealed: range, curb weight, range ratings, and more
The big question that remains is whether Tesla will be able to operate the car without a safety monitor, especially considering it plans to put the car out there without a steering wheel or pedals. With the Cybercab only having a seating capacity of two, it is hard to believe Tesla will even consider putting a Safety Monitor in the car.
It did recently self-certify as Level 4 and has the ability to operate driverless vehicles in the State of Texas under a law that took effect on May 28. You can read more about that here:
Tesla’s Robotaxi dreams just took a massive step toward reality
We’d imagine Cybercabs will be on the roads as soon as July, but August will likely be a better estimate of when the car will be entered into the Cybercab fleet. It all depends at where Tesla is, as they’ve truly prioritized safety with the rollout of the Robotaxi platform.
Tesla Semi spotted with ground truth validation equipment as launch looms
President Trump touts new Air Force One with Musk technology
