SpaceX
NASA and SpaceX will determine fate of Crew Dragon launch debut this Friday
Although the chances of additional delays are high, the orbital launch debut of SpaceX’s Crew Dragon spacecraft remains stoically targeted for 2:47 am EDT (07:47 UTC) on March 2nd, less than ten days from today.
Known as DM-1, the unproven SpaceX vehicle’s autonomous demonstration mission is a critical milestone along the road to assured US access to the International Space Station (ISS), without which NASA will be forced to continue procuring seats on Russian Soyuz missions with aggressively inflated price tags. If everything goes exactly as planned, a successful DM-1 could translate into the company’s first crewed launch as early as July 2019.
Targeting March 2 for Crew Dragon's first flight to the @Space_Station https://t.co/oJRtDhV3aL pic.twitter.com/lLw1FJHLvI
— SpaceX (@SpaceX) February 6, 2019
Following a nominal mission plan, the first spaceworthy Crew Dragon will dock with the ISS a little over 24 hours after launch (March 3rd) with around 180 kg (400 lb) of cargo for the station’s six-astronaut crew. Five days later (March 8th), Crew Dragon will depart from the ISS, detach its expendable trunk, and reenter Earth’s atmosphere for a soft landing in the Atlantic Ocean. Throughout these operations, ISS astronauts, NASA technicians and operators, and a range of SpaceX employees will conduct extensive observations and tests of the new spacecraft’s performance during all mission phases, ranging from on-orbit docking (a new technology for SpaceX) to Atlantic Ocean recovery operations.
Once the capsule has been extricated from the ocean, SpaceX’s spacecraft refurbishment technicians will be faced with an extraordinary challenge, upon which the date of Crew Dragon’s first crewed launch will directly hinge. Assuming splashdown ops are nominal and Dragon is returned safely to Florida, it’s safe to assume that SpaceX will transport the spacecraft to its Hawthorne factory, at which point its engineers and technicians will have roughly two months to prepare it for another launch. Known as an in-flight abort (IFA) test, SpaceX specifically opted to perform the spacecraft safety check despite the fact that NASA did not explicitly require its commercial providers (Boeing and SpaceX) to do so. SpaceX completed Crew Dragon’s pad abort test – required by NASA – almost four years ago, while Boeing will not perform an in-flight abort before launching astronauts and has its pad abort scheduled no earlier than (NET) May 2019.
- Falcon 9 B1051 has spent several months testing at SpaceX’s McGregor, Texas facilities in preparation for DM-1. (SpaceX)
- The first orbit-ready Crew Dragon spacecraft stands beside its human-rated Falcon 9, December 2018. (SpaceX)
- Crew Dragon shows off its conformal (i.e. curved) solar array while connected to SpaceX’s sleek Crew Access Arm (CAA). (SpaceX)
- SpaceX completed a successful static fire of the first Falcon 9 rated for human flight on January 24th. (SpaceX)
SpaceX’s IFA test is designed to verify that Crew Dragon is capable of safely extricating its astronaut passengers from a failing rocket at the point of peak aerodynamic (and thus mechanical) stress during launch, known as Max Q. Combined with a pad abort demonstration, where the above situation is replicated but with the rocket and spacecraft motionless on the launch pad, the engineering assumption is that successful aborts at both standstill and Max Q verify that a given spacecraft has proven that it can essentially abort and carry astronauts to safety at any point during launch.
“The launch scenario where an abort is initiated during the ascent trajectory at the maximum dynamic pressure (known as max Q) is a design driver for the launch abort system. It dictates the highest thrust and minimum relative acceleration required between Falcon 9 and the aborting Dragon … Dragon would separate from Falcon 9 at the interface between the trunk and the second stage… Under these conditions, the Falcon 9 vehicle would become uncontrollable and would break apart.” – SpaceX FAA permit, 2018
Aside from a boilerplate Merlin Vacuum engine on the second stage, SpaceX’s IFA test is set to fly on real Falcon 9 hardware that will almost certainly be consigned to total destruction at the point of abort, around 90 seconds after launch. SpaceX’s decision to expend an entirely flightworthy Falcon 9 Block 5 rocket – featuring a booster capable of supporting anywhere from 5-100 lifetime missions – is a tangible demonstration of the company’s commitment to crew safety above all else, although NASA will either partially or fully compensate SpaceX for the milestone. Set to occur no earlier than June 2019, the IFA schedule is explicitly constrained by the successful launch and recovery of Crew Dragon after DM-1 – any delays to that mission will likely translate into IFA delays, which will translate into delays for the first crewed mission (DM-2).

SpaceX’s Cargo Dragon engineers and technicians have a solid amount of experience refurbishing the spacecraft for cargo missions to the ISS, although the average turnaround for flight-proven capsules currently stands around 18-24 months, not exactly on the heels of the 2-3 months currently alotted for the first Crew Dragon. Thanks to the fact that the IFA Crew Dragon does not need to be refurbished to the standards of orbital flight for its second launch, it’s at least conceivable that that aspirational schedule is within reach. SpaceX’s first crewed demonstration mission (DM-2) could occur as early as one month after a successful IFA (July 2019), pending the completion of joint NASA-SpaceX readiness reviews.
Known as flight readiness reviews (FRRs), those joint reviews are no less significant for DM-1, even if they likely are underwhelmingly marked by a copious amount of slideshow presentations and sitting around tables in meeting rooms. The purpose of the reviews (at least nominally) is to essentially have SpaceX attempt to convince NASA (as empirically as possible) that they are ready to launch Crew Dragon. According to NASA, that review will end NET 6pm EDT (23:00 UTC) on February 22nd, followed one hour later by an official press conference featuring NASA and SpaceX officials.
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News
Starlink is ‘biggest competitive advantage,’ but it’s temporary, United CEO says
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.
Elon Musk
How SpaceX Is raising Raptor’s sea-level thrust while holding engine mass steady
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.
News
Tesla expands Robotaxi geofence in Houston with an ode to SpaceX merger
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.



