SpaceX
What SpaceX’s successful reuse of Dragon Spacecraft really means
Following Saturday’s auspicious launch and and first stage recovery, SpaceX’s Dragon spacecraft has successfully rendezvoused and docked with the International Space Station. Bringing with it more than 5,000 pounds of food, water, scientific experiments, and technology demonstrations, the company’s eleventh mission under their first Commercial Resupply Services contract is exceptional for a very unique and specific reason: the vehicle has flown before, bringing cargo to the ISS on SpaceX’s fourth CRS mission to the ISS. This accomplishment makes the Dragon currently docked at the ISS the only commercial spacecraft in human history to be launched into orbit more than once, continuing a tradition of auspicious firsts.
CRS-11 just after liftoff. Note the core designation “35” under the landing leg. (SpaceX)
Slightly more than two months after the first ever successful reuse of an orbital-class rocket, SpaceX now has two extraordinary demonstrations of success in favor of the company’s pursuit of democratizing affordable access to space. Reusability is and has been SpaceX’s method of pursuing that goal for at least a decade, with Musk publicly exhorting the potential benefits of rapid and complete reusability as early as 2007. It is almost a running joke within the community of aerospace and SpaceX fans that Musk will compare commercial airlines to orbital launch services at least once every time he is interviewed, but his point is and has long been clear. If all one has to do to run a transportation service is refuel after every trip, the price of a ticket or cargo transport drastically decreases. While many have slyly laughed or dismissed this goal in the past, often using the Space Shuttle as an example of the futility of reusability as a tool for cost reduction, it is quite hard to deny what SpaceX has accomplished so far.
The reuse of a Cargo Dragon is also arguably far more significant than it may initially appear. SpaceX has not provided any concrete information on the process of refurbishing the capsule, and it is entirely unclear if the “reuse” entailed much more than furnishing the CRS-4 pressure vessel and Draco thrusters with a new trunk, solar array, external shell. It is possible that, just like SES-10, the process of refurbishing a spacecraft for the first time resulted in little to no cost savings, and that this refurbishment took anywhere from several months to more than a year, with the CRS-4 capsule returning from orbit in late 2014. However, given the absolute rarity of reused capsule-type spacecraft, the data that engineers likely gathered throughout the process of refurbishing the Dragon would arguably make the whole process worthwhile even in the worst case scenarios described above. Hans Koenigsmann, Vice President of Mission Assurance at SpaceX, also noted in a press conference following CRS-11’s launch that the refurbishment of the capsule was somewhat uneventful, stating that the CRS-4 capsule had no unanticipated damage from the rigors of reentry and ocean landing and that SpaceX was already ready to consider using the capsule a third time. It’s likely that SpaceX will begin to rely more heavily on Cargo Dragon reuse as they refocus a majority of their manufacturing efforts on Dragon 2.
-
- The CRS-4 Dragon just before capture. (NASA)
-
- CRS-4 reentered in late 2014 and was recovered in the Pacific Ocean. (SpaceX)
SpaceX and Musk’s (in)famous ultimate ambitions are to make humanity a multiplanterary species, partly as a way to combat the extinction risks that an asteroid or comet strike pose, and partly because it is simply a staggering challenge that has the potential to make many humans “excited to wake up in the morning”. In order to make this happen, Musk saw that access to orbit was far too expensive for a colony on another planet to ever be sustainable, and that resuability was the only immediately obvious and accessible method through which the price to orbit could be decreased by several magnitudes. SpaceX is now almost routinely recovering Falcon 9 first stages when the mass of the payload allows it, and with a fifth and final version or “Block” of the vehicle optimized for rapid reuse set to debut later this year, Musk and others at the company have begun ruminating once more about the possibility of recovering and reusing the second stage of the Falcon 9. Benchmarked somewhere around 30% of the price of the vehicle, routine loss of the second stage effectively prevents the price of the Falcon 9 from dropping much below $20-30 million US dollars. While a nearly 50% or greater reduction in price would be an exceptional accomplishment, it is still far from from the multiple orders of magnitude reduction Musk hoped for when he set out to develop reusable rocketry.
A prototype of Dragon 2 being tested in an anechoic chamber. (SpaceX)
This is where the reuse of Dragon pops its head up. With second stage recovery now being considered theoretically and Dragon 2 (Crew Dragon) preparing to begin regular launches in either Q4 2017 or Q1 2018, SpaceX has a good deal of experience to gain from learning how to safely and rapidly recover and reuse vehicles reentering the atmosphere at orbital velocity. Compared to recovering the first stage, this is another endeavor entirely. The fastest speed at which a recoverable first stage can ever realistically reenter the atmosphere is currently capped at around 5200 mph (2300 m/s), and is usually much closer to 3000 mph. An orbital capsule like Dragon, however, enters the atmosphere from Low Earth Orbit (LEO) at around five times that speed, typically close to 16,000 mph. In the context of recovering the second stage of Falcon 9, one must consider that most of SpaceX’s commercial manifest is made up of geostationary satellites, which require more energy to reach a higher orbit, and consequently would require the second stage to survive even higher reentry velocities in order to be recovered.
Returning from Mars, as SpaceX’s Interplanetary Transport System would have to, results in even higher reentry velocities of at least 25,000 mph for a reasonably quick journey. This is the most important detail in explaining the true value of simply reusing a Dragon capsule as SpaceX has just now done. By taking its first steps towards routinely reusing truly orbital spacecraft, SpaceX is advancing their knowledge reusability in practice and consequently taking concrete steps to prepare themselves for the difficult challenges that lie ahead in their pursuance of enabling sustainable colonization of Mars. Dragon 2 (Crew Dragon) promises to eventually rid the refurbishment process of the many headaches that salt water intrusion undoubtedly creates by returning via supersonic retropropulsion to a landing pad, much like Core 35 did this past Saturday.
Looking slightly further into the future, SpaceX has already announced plans to launch two unnamed private customers in a Dragon 2 on what would likely be a circumlunar free return trajectory, or around the Moon and back. The reentry velocity would be very similar to the velocity required to return to Earth from Mars, and certainly much faster than any reentry from geostationary orbits of Earth. If SpaceX manages to successfully and reliably recover and reuse orbital vehicles reentering at such high velocities, then the company will have made extraordinarily promising progress towards achieving their central goal of drastically lowering cost to orbit and thus enabling humanity to gain footholds on other planets.
So, take this Dragon reuse as you will. It may well be a major step along the way to colonizing Mars, or it may simply be an exciting practical implementation of SpaceX’s philosophy of reuse. Either way, this is a Dragon that is certainly worth celebrating.
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.
Starlink is ‘biggest competitive advantage,’ but it’s temporary, United CEO says
Tesla Cybercab’s unorthodox paint process explained
