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SpaceX competitor ULA readies for final launch of 30-year-old Delta II rocket
Long-time SpaceX competitor United Launch Alliance (ULA) is nearly ready for the final launch of its Boeing subsidiary’s Delta II family of rockets, culminating a nearly 30-year history mostly dominated by routine success.
If completed without failure, the launch of NASA’s ICESat-2 satellite – built to track global ice-sheet variation with a huge space-based laser – will mark Delta II’s 100th consecutive success and the rocket’s 153rd fully successful launch overall, an immensely impressive and laudable achievement regardless of the vehicle’s lack of competitive advantage in the modern launch industry.
A teary farewell to Delta II this weekend, so in the run up we're going to give her a send off with a trip down memory lane per the vehicle's evolution from Thor.
Standby for a 7,000 word (yep!) feature article from William Graham on Thursday, with a ton of cool info/old photos. pic.twitter.com/g43PS6kHcr
— NSF – NASASpaceflight.com (@NASASpaceflight) September 13, 2018
Shockingly tiny when compared with modern launch vehicles like Delta IV, Atlas V, and Falcon 9, Delta II measures roughly 39 meters (~128 ft) tall, 2.4 meters (8 ft) in diameter, and weighs 160 metric tons (~350,000 lb) when fully fueled, just over half as tall and significantly less than 30% as heavy as SpaceX’s Falcon 9.
Contracted by NASA in 2013, Delta II’s ICESat-2 launch cost the agency roughly $97 million (2013 USD), although the cost of launch has shrunk in relation to the satellite, which suffered at least $200 million of overruns and 12+ months of delays due to difficulties developing the spacecraft’s impressive space-based LIDAR system. For comparison, NASA contracted a Falcon 9 launch (for the TESS exoplanet observatory, launched in April 2018) from SpaceX for $87 million in 2016, while the USAF has secured several launch contracts with SpaceX for far more complex GPS satellite launches at a cost of almost exactly $97 million apiece.
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- The final Delta II rocket is awaiting its last launch from Vandenberg Air Force Base this Saturday. (NASA/Randy Beaudoin)
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- A Delta II Heavy rocket seen launching NASA’s THEMIS satellite in 2007. (NASA)
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- Falcon 9 Block 5 booster B1049 returned to Port Canaveral today, ~60 hours after launch. Falcon 9 is dramatically cheaper than the aging Delta II. (Tom Cross)
Aging rockets, changing markets
Put simply, the contrast in capabilities offered for equivalent prices soundly demonstrates exactly why Delta II is being phased out. Although capable of better performance with a third upper stage and nine much larger solid rocket boosters (SRBs), that ‘Heavy’ variant of Delta II cost NASA an incredible $150 million per launch in 2009. For the versions of Delta II closer to $100 million per launch, the rocket is able to place 2500-3200 kg (5500-7000 lb) in low Earth orbit and not much at all to any higher energy destinations, which demand a third stage or a heavier rocket. At a comparable price (or much lower in SpaceX’s case), Atlas V and Falcon 9 are able to launch far larger payloads to far higher orbits.
This was by no means the case when Delta II debuted in 1989, and the McDonnell Douglas-built rocket readily earned its impressive reputation as a relatively reliable, capable, and (more or less) affordable launch vehicle compared alongside other rockets available in the ’90s. Delta II wound up as a ULA rocket (sort of) thanks to Boeing and McDonnell Douglas’ 1997 corporate merger, followed in 2006 by Lockheed Martin and Boeing’s cooperative formation of the United Launch Alliance. ULA thus operates Delta II, Delta IV, and Atlas V, all featuring multiple variants and very few distinguishing capabilities when compared amongst themselves.
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- Delta II is trucked to the launch pad ahead prior to launch. (NASA)
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- The business end of Delta II. (ULA)
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- ULA technicians install one of four solid rocket boosters on ICESat-2’s Delta II launch vehicle. (NASA)
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- ULA technicians install one of four solid rocket boosters on ICESat-2’s Delta II launch vehicle. (NASA)
The cost of maintaining all those highly duplicative rockets and unique factories and engineering expertise is fundamentally unnatural and reliant upon some sort of noncompetitive market forces (i.e. launch monopolies assured through “block buys” of multiple rockets from NASA and the US military), forces that have been mortally challenged by SpaceX’s reintroduction of competition to the American launch industry.
ICESat-2 is scheduled to launch on Delta II on Saturday, September 15th at 5:46 AM PDT/12:46 UTC. Stay tuned for more information on ICESat-2’s giant space LIDAR payload and mission goals, as well as Teslarati photographer Pauline Acalin’s photos of the fairly historic rocket launch.
For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet check out our brand new LaunchPad and LandingZone newsletters!
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Tesla removes Model S and X custom orders as sunset officially begins
In a significant development that marks the beginning of the end for two of its longest-running models, Tesla has removed the custom order configurator for the Model S sedan and Model X SUV from its website.
Tesla has officially started the “honorable discharge” of the Model S and Model X with a massive move, removing the two vehicles from Custom Orders and only offering inventory options.
It is the latest move Tesla has made to pull the Model S and Model X from its lineup, a decision CEO Elon Musk announced during its last quarterly earnings call.
Tesla brings closure to flagship ‘sentimental’ models, Musk confirms
In a significant development that marks the beginning of the end for two of its longest-running models, Tesla has removed the custom order configurator for the Model S sedan and Model X SUV from its website.
As of April 1, visitors to tesla.com/model-s and tesla.com/modelx are now redirected exclusively to limited inventory listings rather than a design studio, allowing buyers to select paint, wheels, interior options, or performance upgrades. Only pre-built vehicles currently in stock are available for purchase or lease.
Tesla CEO Elon Musk confirmed the change directly on X, posting: “Custom orders of the Tesla Model S & X have come to an end. All that’s left are some in inventory.”
Custom orders of the Tesla Model S & X have come to an end. All that’s left are some in inventory.
We will have an official ceremony to mark the ending of an era. I love those cars.
This was me at production launch 14 years ago: pic.twitter.com/6kvCf9HTHc
— Elon Musk (@elonmusk) April 1, 2026
We will have an official ceremony to mark the end of an era.” Accompanying the statement was a throwback photo from the Model S production launch in 2012, underscoring the emotional weight of the decision.
Musk had first signaled the phase-out during the company’s Q4 2025 earnings call in January, describing it as time for an “honorable discharge” of the programs to free up resources at the Fremont factory for Optimus humanoid robot production and autonomous vehicle initiatives.
The Model S, introduced in 2012, and the Model X, which followed in 2015, were instrumental in establishing Tesla as a premium electric vehicle leader.
The sedan offered class-leading range and acceleration, while the SUV’s signature falcon-wing doors became an iconic feature. Together, they proved EVs could compete in the luxury segment. Yet sales volumes have dwindled in recent years as Tesla prioritized higher-volume Model 3 and Model Y vehicles.
The flagships now represent a tiny fraction of overall deliveries, making continued custom production inefficient as the company accelerates toward robotaxis and next-generation platforms.
Prospective buyers are urged to act quickly. Remaining U.S. inventory vehicles—some nearly new—may include incentives such as lifetime free Supercharging, Full Self-Driving (Supervised) capability, and premium connectivity, depending on configuration.
Leasing options start around $1,699 per month for select Model X units, though exact pricing and availability fluctuate. International markets, including Europe and China, have already seen similar restrictions in recent months.
The move aligns with Tesla’s broader strategy to streamline its lineup and redirect manufacturing capacity toward autonomy and AI-driven products. While some enthusiasts lament the loss of personalization, the company views the transition as necessary progress.
Tesla has indicated that once the current inventory sells out, new Model S and Model X vehicles will no longer be offered.
For loyal owners and fans, the promised “official ceremony” may provide a fitting send-off. In the meantime, the website change serves as a clear signal: the era of bespoke flagship Teslas has quietly concluded, and the focus has fully shifted to the future.
Elon Musk
SpaceX files confidentially for IPO that will rewrite the record books
SpaceX files confidentially for a record-breaking IPO targeting a $1.75T valuation and $80B raise, driven by Starlink growth and its xAI merger.
Elon Musk’s rocket and satellite company submitted its draft registration to the U.S. Securities and Exchange Commission today for an initial public offering, targeting June at a $1.75 trillion valuation. This would be the largest in history.
SpaceX has filed confidentially with the SEC, first reported by Bloomberg. SpaceX would be valued above every S&P 500 company except Nvidia, Apple, Alphabet, Microsoft, and Amazon.
The filing uses a confidential process that allows companies to work through SEC disclosures privately before initiating a public roadshow. With a June target, official details through a formal prospectus is expected to go public in April or early May, after which SpaceX must wait at least 15 days before beginning investor marketing.
While SpaceX is best known for its Falcon 9 and Starship rockets, the $1.75 trillion valuation is anchored by Starlink, its satellite internet service. Starlink ended 2025 with 9.2 million subscribers and over $10 billion in revenue, which is a figure analysts project could reach a staggering $24 billion by the end of 2026. A February all-stock merger with xAI, Musk’s artificial intelligence venture, further boosted the valuation.
SpaceX officially acquires xAI, merging rockets with AI expertise
Bank of America, Goldman Sachs, JPMorgan Chase, and Morgan Stanley are lined up as senior underwriters. SpaceX is also considering a dual-class share structure to preserve insider voting control, and plans to allocate up to 30% of shares to retail investors, which is roughly three times the typical norm.
Elon Musk
Elon Musk hints at “official ceremony” with throwback photo to close Tesla Model S, Model X chapter
Elon Musk promises an official ceremony to mark the end of Tesla Model S and Model X production.
Tesla has officially begun winding down production of the Model S and Model X, sending farewell emails to U.S. customers on March 27 and updating the website to reflect the end of the line. Shoppers visiting Tesla.com now find only a limited set of Model S and Model X inventory units available for purchase, with no option to configure a new factory build. The move formalizes what CEO Elon Musk announced on the company’s Q4 2025 earnings call in January, when he said it was “time to basically bring the Model S and X programs to an end with an honorable discharge.”
Musk posted on X a throwback photo of himself speaking at the Model S production launch in 2012, and noting “We will have an official ceremony to mark the ending of an era. I love those cars.”
The mention of an official ceremony is notable. Tesla has not held a formal farewell event for a vehicle before, and Musk’s wording suggests this will be something deliberate rather than a quiet line shutdown. Given that Musk’s X post shows a photo of him on stage with a microphone in front of an audience at the Fremont factory, it wouldn’t be too far-fetched to expect a closing ceremony to take place at the same location. Perhaps? Whether it becomes a public event, a private gathering for employees, or a livestreamed moment on X remains to be seen.
Custom orders of the Tesla Model S & X have come to an end. All that’s left are some in inventory.
We will have an official ceremony to mark the ending of an era. I love those cars.
This was me at production launch 14 years ago: pic.twitter.com/6kvCf9HTHc
— Elon Musk (@elonmusk) April 1, 2026
The Model S first went on sale nearly fifteen years ago and was Tesla’s first fully in-house designed vehicle, proving that an electric car could be fast, desirable, and capable of long distance on a single charge. The Model X followed in 2015, turning heads with its unmistakable and distinctive falcon-wing doors, while becoming one of the first all-electric SUVs on the market. Tesla’s two flagship vehicles would ultimately push legacy automakers to take all-electric transportation seriously and help fund development of the more affordable Model 3 and Model Y.
By 2025, however, both models had been reduced to a rounding error in Tesla’s sales figures. Musk was direct about what comes next, stating “We are going to convert that production space to an Optimus factory. It’s part of our overall shift to an autonomous future.”
Elon Musk’s $10 Trillion robot: Inside Tesla’s push to mass produce Optimus
That shift is already underway. Tesla officially started Optimus Gen 3 production at its Fremont factory in January 2026, with the line targeting a run rate of one million units per year. The Gen 3 robot features 22 degrees of freedom per hand, runs on Tesla’s AI5 chip, and shares the same neural network architecture as Full Self-Driving. A dedicated Optimus factory at Gigafactory Texas is also under construction, with a planned annual capacity of 10 million units. The production lines that once built the Model S and Model X are being converted to support that ramp.
Tesla confirmed it will continue to support existing owners with service, software updates, and parts for as long as people own the vehicles. For buyers still interested in a new example, remaining U.S. inventory is discounted and the window is closing fast.
Tesla removes Model S and X custom orders as sunset officially begins
SpaceX files confidentially for IPO that will rewrite the record books
Elon Musk hints at “official ceremony” with throwback photo to close Tesla Model S, Model X chapter
Elon Musk says Tesla is developing a new vehicle: ‘Way cooler than a minivan’
Elon Musk launches TERAFAB: The $25B Tesla-SpaceXAI chip factory that will rewire the AI industry
