SpaceX
SpaceX prepares for last launch until August: Caution over cadence
After a second automatic T-10s launch abort Monday night, Elon Musk expressed a welcome prioritization of caution over an attempt to break cadence records. As such, the launch team at LC-39A are standing down an attempt today and instead conducting a full review of the Falcon 9 vehicle and ground systems, pushing the launch to either July 5th or 6th. As Musk transparently phrased it, there is only one chance to get a rocket launch right.
We're going to spend the 4th doing a full review of rocket & pad systems. Launch no earlier than 5th/6th. Only one chance to get it right …
— Elon Musk (@elonmusk) July 4, 2017
Following a truly unprecedented series of launches for the company, there was understandably a bit of annoyance from fans watching the coverage for a second time, as well as from journalists seeking to cover the launch. I think a tweet from former NASA Space Shuttle Program Manager Wayne Hale summed up the proper response most coherently, however, stating that “it’s tough to remain vigilant and do the right thing, extremely tough after a couple of launch scrubs and [with] range closure looming”. Remaining vigilant is precisely what SpaceX is doing by calling off another attempt on July 4th and choosing to instead carefully examine the systems involved to ensure that there is no real issue with pad or vehicle hardware.
For launch companies, there are an untold number of external and internal pressures urging executives to attempt launches, be those financial, political, or something as simple as employees wanting to get home for a holiday. However, past failures of launch vehicles, particularly the Space Shuttle, have demonstrated that constant vigilance is a necessity when dealing with rocketry. Wayne Hale was flight director for forty Shuttle launches. In fact, he became Program Manager the day of the Columbia disaster, which occurred at the beginning of February in 2003.
In this context, his statement is almost certainly intended as positive – albeit solemn – encouragement for the choice to take a more cautious route before attempting another launch. SpaceX itself has experienced two widely publicized failures of the Falcon 9, with the most recent of those having occurred less than ten months ago. After China suffered a complex failure during the second launch of their Long March 5 heavy lift vehicle last Sunday, Musk offered sympathy for those involved. Any failure in the launch industry often acts as a wake-up call for other companies and agencies involved, and undoubtedly becomes a reminder that one cannot become too comfortable or allow launch processes or vehicle manufacturing to become too routine when the stakes are as high as they can be.
Sorry to hear about China launch failure today. I know how painful that is to the people who designed & built it. https://t.co/iOkj6egF3O
— Elon Musk (@elonmusk) July 2, 2017
It goes without saying that SpaceX is sharply aware of the need to ensure reliability and safety as they march ever closer to the debut flight of Crew Dragon and its first crewed launches, likely to occur in early 2018. If the stakes for launching the payloads of commercial customers are already high, the price of failures that could lead to loss of life are unspeakable and ought to humble those fans and bystanders who may be losing patience while waiting for a third (admittedly enthralling) launch. Those eager to watch SpaceX’s live coverage must seek to remember that the launches we love to watch occur because paying customers have placed trust in SpaceX to deliver their payloads to orbit, be those payloads massive geostationary communications satellites or astronauts and cargo headed to the ISS. Rightfully so, the customer will always come first, and routine live coverage of rocket launches must always be treated as the luxury it is for the indefinite future.
SpaceX has successfully recovery and reused both Falcon 9 and Cargo Dragon in the last several weeks, and has also recovered three first stages from the three related launches that occurred in that same time period. (SpaceX)
Admittedly, a cornerstone of SpaceX’s mission as a company is making access to orbit reliable, affordable, and routine, but there will always be risk in rocket launches, just as there will always be risk when one boards a plane, drives a car, or simply walks down the sidewalk along a busy street. Minimizing and reducing the risk present in spaceflight will take a considerable amount of time and effort, and doing what is necessary to prevent failures from negatively impacting the customers that make SpaceX viable as a company is both a rational and ethical strategy.
Returning to current events, the Falcon 9 intended to launch Intelsat 35e went horizontal on July 4, and is likely now in the integration facility present at LC-39A, providing easier access to engineers as they comb over the vehicle to ensure its health. After an absolutely picturesque launch attempt Monday evening, weather is looking even better for a potential launch attempt on either Wednesday or Thursday evening.
If the vehicle and pad cooperate, Intelsat 35e will be a facing send off for the Eastern Range before it shuts down for the remainder of July to undergo routine maintenance. SpaceX currently does not have Vandenberg (West coast) missions scheduled until August, so July will likely see no launches from the company. There is still plenty to be done in lieu of launching customer payloads, however. LC-40, the pad damaged in the Amos-6 static fire incident last September, is currently preparing to be reactivated, with a recent interview of Gwynne Shotwell pointing to its initial availability sometime in August. Once it is reactivated, all single core Falcon launches will be transferred to LC-40, and LC-39A will begin undergoing structural modifications to accommodate both crewed missions in 2018 and Falcon Heavy, which could debut as early as Q4 of 2017.
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- Intelsat 35e, July 2nd. (SpaceX)
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- A render of Falcon 9 and Crew Dragon at LC-39A. (SpaceX)
The two most visible changes that will occur at LC-39A will be the installation of additional hold-down clamps and modifications to the Transporter Erector, as well as a Crew Access Arm, which will be attached to the large, vertical structure seen directly right of Falcon 9. Of note, it is very likely that at least two, if not all three of the first Falcon Heavy’s cores are already present at the Cape. After years of being deemed a paper rocket, Falcon Heavy is indeed very real and very close to being able to conduct its first launches.
A month of no launches from SpaceX will undoubtedly be less than thrilling, but the Air Force and Kennedy Space Center employees will get a much-deserved break from a busy launch manifest ahead of what will likely be an even busier final four months of the year. There is a lot to look forward to.
United Airlines CEO Scott Kirby said that SpaceX’s Starlink satellite internet is its leading competitive advantage in the U.S. airline industry. However, in recent comments, while he described the service as “the biggest competitive advantage” the carrier currently holds, he also acknowledged that the edge is temporary.
“…everybody eventually is going to have high-speed low earth orbit internet connectivity. It’s going to be a must-have. We are going to have a few years of being the only airline that has it at scale, and that’s our mission,” Kirby said. Until everyone has it, United aims to capitalize on its head start by converting trial users into long-term loyal customers.
🚨 United CEO Scott Kirby calls Starlink “the biggest competitive advantage,” but says it’s temporary.
“I think it’s the biggest competitive advantage. And it’s temporary. Like it’s not, everybody eventually is going to have high speed low earth orbit internet connectivity. It’s going to be a must-have. But we are going to have a few years of being the only airline that has it at scale, and that’s our mission.”
“I think we’re going to convince customers that United is the best airline and we’re going to get customers to switch their loyalty, to get our credit card, switch their loyalty to United. Not because of Starlink. They’re going to try us for Starlink and they’re going to stay with all the other technology, and everything else is better, and the technology in particular is so much better than technology other, and it’s accelerating because we’ve got the right tech stack, and because we’re like, our gap is getting wider and wider with our technology every day.”
Next: LAX becomes United’s first 100% Starlink hub in the first half of next year, and the United app will show your Starlink odds for each flight. https://t.co/hToyFWaWj7
— TESLARATI (@Teslarati) October 27, 2026
United has moved faster than its rivals on Starlink installations. As of mid-to-late October 2026, the system was on roughly 43 percent of its fleet, with plans to reach 61 percent by year-end, 87 percent by June 2027, and full fleet coverage by the end of next year.
The airline already operates more Starlink-equipped flights than the rest of the U.S. industry combined. Los Angeles International Airport is scheduled to become United’s first 100 percent Starlink hub in the first half of 2027, and the carrier’s app will display the likelihood that any given flight has the service.
Kirby has pointed to early evidence that the offering influences booking decisions. Some passengers loyal to other airlines are already switching flights for Starlink connectivity, something the airline, along with American Airlines, has tried to leverage against competing airlines. Both companies used status-match programs, and some of those customers are pursuing company-specific credit cards, which signals an intent to stay.
Once onboard, these customers encounter the airline’s broader investments in aircraft, larger seat-back screens, oversized bins, connection tools, and a mobile app that Kirby says outperforms competitors. Wi-Fi satisfaction scores on Starlink-equipped planes have been reported to be nearly double those on aircraft with other systems.
Competitors are moving slowly to do the same. Southwest Airlines began installations in 2025 and expects to complete them soon. Delta is pursuing Amazon’s Leo system, while American expects to start Starlink work in early 2027 and has not yet detailed regional-fleet plans. This timeline gap gives United a multi-year window in which it remains the only major U.S. carrier offering Starlink at scale.
Kirby has framed the strategy as pressing that advantage while simultaneously widening gaps in other technology areas so that customers who try United for the Wi-Fi remain for the overall experience.
The approach reflects a calculated bet that superior in-flight connectivity can accelerate share gains and support longer-term financial targets, including a 10 percent pre-tax margin goal.
High-speed internet is particularly valued by premium and business travelers who can work or stream reliably. As low-Earth-orbit service becomes ubiquitous, the temporary nature of the pure connectivity edge means United’s retention will depend on whether its other product and operational improvements keep pace.
SpaceX’s Raptor engine family has steadily increased sea-level thrust while simultaneously reducing mass, turning iterative engineering gains into substantially higher performance for the Super Heavy booster. CEO Elon Musk shed more light on how powerful Raptor 4 will be, and it’s pretty crazy.
Raptor 1 delivered 185 metric tons of thrust at roughly 2,080 kilograms, while Raptor 2 raised that to 230 tons while cutting mass to about 1,630 kilograms. SpaceX data for Raptor 3 lists a target of 280 tons at 1,525 kilograms (with further reductions in associated vehicle hardware), while operational flight ratings have been cited near 250 tons.
This morning, Elon Musk stated that Raptor 4 is expected to reach 300 tons of sea-level thrust at roughly the same mass as Raptor 3. Across these versions, thrust has risen by more than 60 percent from the first engines while engine mass has fallen, producing a sharp improvement in thrust-to-weight ratio. This is a true testament to how great SpaceX engineering has been:
🚀 Elon says Raptor 4 will make 300 tons of thrust at sea level at roughly the same mass as Raptor 3.
How far Raptor has come:
Raptor 1: 185 tf, 2,080 kg
Raptor 2: 230 tf, 1,630 kg
Raptor 3: 250 tf, 1,525 kg
Raptor 4: 300 tf33 on Super Heavy = ~9,900 tf, nearly 3x Saturn V https://t.co/HQDswZhyvL
— TESLARATI (@Teslarati) October 26, 2026
With 33 engines on SuperHeavy, the jump from earlier versions to a 300-ton Raptor 4 would produce roughly 9,900 metric tons of total liftoff thrust, nearly three times the Saturn V’s approximately 3,400 metric tons from its five F-1 engines.
This is not just a larger number on a data sheet, either, as sea-level thrust is the force available the moment the vehicle leaves the pad. This is when it is heaviest and still deep in Earth’s gravity well and dense atmosphere.
Higher levels of sea-level thrust directly improves the initial thrust-to-weight ratio of the full stack. A higher ratio produces faster acceleration off the pad, which shortens the time the rocket has to spend fighting gravity, and gravity losses during the first minute or two of the flight are a major drain on total available delta-v. Every second shaved off of that early climb preserves more propellant energy for reaching orbital velocity or for carrying extra payload.
Because Super Heavy’s engine count is constrained by vehicle diameter and packing density, increasing thrust per engine is the most straightforward way to raise total liftoff performance without redesigning the booster structure or design.
The same-mass target for Raptor 4 is equally important. Holding engine mass roughly constant while raising thrust improves the engine’s own thrust-to-weight ratio and reduces the structural and propellant mass fraction that must be carried solely to support the engines.
Earlier Raptor iterations also simplified or eliminated extensive vehicle-side hardware such as heat shields. These gains compound: more force for less installed mass leaves additional capacity for propellant, payload, or operational margins such as engine-out capability.
For Starship’s architecture, the practical effects are large. Greater liftoff thrust supports heavier vehicles, larger propellant loads, and higher payloads to low Earth orbit, figures SpaceX has targeted in the 100-plus-ton reusable range. That capacity underpins orbital refueling, lunar missions, and eventual Mars cargo and crew flights.
Continued growth in sea-level thrust therefore tightens the gap between theoretical rocket performance and the high flight rates and reusability needed to make large-scale space transport practical.
Tesla expanded its Robotaxi geofence in Houston, Texas, today, enlarging the service area and drawing a new rocket-shaped boundary across the city’s northwestern and central parts.
Although CEO Elon Musk said it was just a coincidence, the expansion seems to be an ode to SpaceX and its potential merger with Tesla.
🚨 Tesla has just expanded its Robotaxi geofence in Houston
It looks a lot like a rocket — we all remember the shape in Austin 🤣 https://t.co/cFOPEuiJ4u
— TESLARATI (@Teslarati) October 26, 2026
The official Tesla Robotaxi account announced the change with the lines “Houston, we have liftoff” and “Bigger service area now live,” pairing them with a map overlay.
The prior white geofence, roughly 25 square miles covering Jersey Village, Harvest Bend, and the Willowbrook corridor along U.S. 290 and State Highway 249, now sits inside a larger blue zone that stretches southeast toward Bellair and closer to central Houston.
Houston’s Robotaxi service launched on April 18, 2026, the same day as Dallas, as Tesla’s first unsupervised public expansion beyond Austin. From the start, the vehicles were Model Ys running without anyone in the front seats, booked through the dedicated Tesla Robotaxi app and open to the public inside the geofence.
Trackers measured the initial zone at about 25 square miles; by late September it had not grown substantially. Community and registry data indicated a modest local fleet of unsupervised Model Ys, while dozens to nearly 200 Cybercabs, the purpose-built, steering-wheel-free two-seaters, have been spotted staging and testing in Houston lots, though public Cybercab rides remain limited to Austin for now.
Across the broader Robotaxi program, Tesla began public Robotaxi rides in Austin in June 2025, as a small geofence and vehicles with safety monitors became available for a ride-hailing service. Later on, Tesla removed the monitors and steadily expanded the service area until it covered most of the Austin metro area.
Unsupervised Robotaxi services now run in six cities: Austin, Dallas, Houston, Miami, Orlando, and Tampa. Cumulative driverless miles reported by the company have reached several million. The Cybercab entered public service in Austin in early September 2026 and has scaled rapidly there. The company has also said that Dallas is next for Cybercab rides in November, with further cities and 24/7 hours targeted by year-end, plus fleet-operator sales of the vehicle.
Waymo also operates a fully driverless service in Houston, which has been open to the public since August of this year.
The Houston expansion continues Tesla’s pattern of starting with tightly controlled validation zones before widening coverage as real-world data accumulates, while the rocket motif on the map underscores the company’s habit of injecting visual flair into its autonomy rollout.
Riders inside the new boundary can request unsupervised Model Y trips in the Robotaxi app; exact operating hours and further Cybercab availability remain subject to app updates and company statements.
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