SpaceX
SpaceX to submit Moon lander proposal for latest NASA spaceflight competition
SpaceX reportedly plans to submit its own human-rated Moon lander design for NASA’s latest major request for proposal (RFP), part of the agency’s rough plan to return humans to the Moon no earlier than 2028.
Meant to begin delivering NASA astronauts to the surface of the Moon as early as 2028, the agency hopes to base those lander operations on a thus far unbuilt space station orbiting the Moon with the support of its SLS rocket and Orion spacecraft.
This is actually a pretty big deal. https://t.co/P6LXAMXVJI
— Eric Berger (@SciGuySpace) February 11, 2019
SpaceX will submit a lunar lander design.
— Eric Berger (@SciGuySpace) February 11, 2019
Meant to build directly off of SLS/Orion, a NASA-designed rocket and spacecraft beset with at least three years of delays and billions of dollars in cost overruns, it’s unclear where SpaceX might fit into NASA’s latest modernized attempt at an Apollo Program 2.0. Alongside the 2017 cancellation of Crew Dragon’s propulsive landing program due in part to the likely cost of the certification burden NASA would have placed on the technology before allowing it to land astronauts, SpaceX also canceled Red Dragon (and thus Grey Dragon), a proposal to use a minimally modified version of Crew Dragon as an ad-hoc Mars lander and R&D testbed.
Aside from the likely cost of certifying propulsive Crew Dragon to NASA specifications, CEO Elon Musk also explained the program’s cancellation as a consequence of SpaceX’s far greater interest in what he described as “vastly bigger ship[s]” in July 2017. This translated into a presentation at IAC 2017 a few months later, where Musk revealed SpaceX’s updated design for a giant, fully-reusable launch vehicle meant to enable sustainable Mars colonization, known then as BFR. BFR has since been reconceptualized at least two more times, settling (at present) on a radical new approach said to rely heavily on stainless steel as a replacement for advanced carbon composites.
Initially making one 200 metric ton thrust engine common across ship & booster to reach the moon as fast as possible. Next versions will split to vacuum-optimized (380+ sec Isp) & sea-level thrust optimized (~250 ton).
— Elon Musk (@elonmusk) February 1, 2019
In the second half of 2018 and the first few months of 2019, the SpaceX CEO’s BFR (now Starship/Super Heavy) narrative has noticeably diverged from a largely exclusive focus on Mars to include a new interest (be it genuine or out of convenience) in the Moon. Most notably, Musk stated in January and February 2019 that SpaceX’s single-minded goal for BFR was now “to reach the moon as fast as possible”. In response to a question about SpaceX’s intentions for the first few orbital BFR (Starship) launches, Musk also replied, “Moon first, Mars as soon as the planets align”.
This is likely explicitly connected to Japanese billionaire Yusaku Maezawa’s decision to purchase the first operational Starship (BFR) launch in support of his philanthropic #DearMoon project, meant to send 8-10 artists from across Earth on the first commercial voyage around the Moon as early as 2023. While no specific value was given, the implication of CEO Elon Musk’s emotional response when discussing the financial support pegged the number in the hundreds of millions of dollars, likely on the order of $250M to $500M. However, any astute bureaucrat or aerospace executive would also be (and have been) distinctly aware of a new political undercurrent pushing for the US and NASA to return humans to the Moon, circulating for the last few years before breaking through to the surface in the last six or so months.
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- SpaceX’s updated BFR spaceship seen cresting over the Moon’s limb. (SpaceX)
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- SpaceX’s 2017 BFS (now Starship) delivers cargo to a large lunar base. (SpaceX)
Orion/SLS versus Starship/Super Heavy?
Per Musk’s frequent and insistent comments on just how hard he expects it to be for SpaceX to fully fund the development of BFR, it would come as no surprise to learn that SpaceX had set its eyes on potential sources of major BFR development funds. Where exactly NASA will find the multibillion-dollar sum likely required to develop even a commercial human-rated Moon lander is entirely unclear, but alas. Although NASA’s new Moon mission seems like an apt fit for SpaceX, funding aside, the problem remains that SpaceX’s next-generation Starship/Super Heavy (formerly BFR) launch vehicle poses a direct, existential threat to NASA’s SLS rocket and Orion spacecraft, an almost entirely expendable system likely to cost no less than $1B per launch and unlikely to launch for the first time until 2021.
NASA’s human return to the Moon is meant to directly complement SLS/Orion thanks to the intention of using a theoretical Moon-based space station (known as Gateway) in a bizarre lunar orbit (known as a “Near Rectilinear Halo Orbit” or NRHO) as the base of lunar-landing operations. The decision to place said Gateway in a lunar halo orbit derives almost exclusively derives (PDF) from a separate decision to design NASA’s future exploration plans around SLS and Orion, particularly Orion in the context of the Moon. Put simply, Orion is relatively mass-inefficient and has a fairly limited amount of delta V (shorthand for the capacity to change one’s velocity), preventing far more useful orbits (i.e. actual lunar orbits). The fragile web of Gateway, SLS, Orion, and any potential crewed Moon landers is intentionally designed to be interdependent, meaning that each piece on its own makes little objective sense and has no obvious functional benefit relative to a bevy of alternatives.
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- SLS Block 1. (NASA)
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- NASA’s proposed Moon-based space station, known as Gateway. (NASA)
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- BFR’s spaceship and booster (now Starship and Super Heavy) separate in a mid-2018 render of the vehicle. (SpaceX)
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- A BFS attempts a Mars landing in this official updated render. (SpaceX)
As designed, SpaceX’s Starship/Super Heavy combo would be a nearly redundant and radically simpler solution to the mishmash of Gateway, SLS, Orion, and others. A return to using propulsive Crew Dragon landings as a method of significant payload delivery to the lunar surface is immensely unlikely. The value of an entirely new SpaceX-built craft is equally unclear, given Musk and SpaceX’s general stance on putting development funds towards things that bring the company closer to achieving its ultimate goal of sustainable interplanetary colonization. Regardless, it will undoubtedly be exciting to see what happens and whether SpaceX actually chooses to submit a proposal for one or all aspects of NASA’s baselined lunar lander.
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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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