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SpaceX’s Starship, Starhopper prototypes continue slow and steady progress

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The last few weeks of SpaceX’s work on Starship and Starhopper prototypes has been marked by less visible progress relative to the past few months. The changes that are visible, however, confirm that its Boca Chica engineers are working around the clock to complete the first orbital Starship prototype.

At the same time, it appears that SpaceX’s South Texas facilities are preparing for a rapid period of expansion and build-up. New work around the ad-hoc Starhopper pad has recently begun, while construction of a second concrete jig for concurrent prototype fabrication and what will likely be a more permanent hangar and control facility are also ramping up. Things have been quiet news-wise for SpaceX’s McGregor and Hawthorne facilities but there is reason to believe that Raptor production and testing is going smoothly.

Starship Alpha

The most obvious visible progress made in April is centers around SpaceX’s first orbital Starship prototype, soon to begin its third month of active construction. As of mid-March, the shells of two large steel barrel sections – together about 18 m (60 ft) tall – were fully erected at the build site, with a handful of other sections in various states of welding. The height of those two cylinders has remained unchanged since then but it’s safe to assume that a ton of work has been going on inside them, invisible to anyone viewing from public perspectives since drones were effectively banned in March. In other words, the two pieces – most likely the barrel sections of Starship’s liquid methane and liquid oxygen (LOX) tanks – are likely being carefully transformed into actual propellant tanks.

A look inside SpaceX’s 2017 version of a 9m-diameter Starship.

There is also a good reason for their height differential: the larger (LOX) section is almost exactly a third larger than the small section (methane) in part because of the physical reality that Starship will need almost exactly 33% more LOX than methane by volume. Large propellant tanks – particularly those meant for cryogenic fluids and spaceflight applications – are often quite complex, with the vast majority of that complexity happening under the hood. The above render was made while SpaceX was still planning on carbon fiber tanks and also appears to be significantly simplified, but it still offers a small look at some of that complexity.

Aside from successfully completing thousands of welds throughout the assembly, a lot of the effort of building an advanced tank is put into plumbing – both internal and external – needed to load, unload, pressurize, depressurize, and generally manage cryogenic (i.e. super cold) liquid propellant. SpaceX decided to utilize a partial balloon tank design to keep the steel skins of its stainless steel Starship and Super Heavy as thin as possible, adding yet another level of internal work due to the need for stringers and longerons on top of baffles and hardware to mount COPVs or header tanks.

Starship glows red and white-hot as it reenters Earth’s atmosphere. (SpaceX)
SpaceX already uses stringers (the grid-like structure) in Falcon 9’s RP-1 tank. (SpaceX)

Adding further complexity to the internal structure of Starship is the presence of major aerodynamic surfaces and landing legs, both of which will need to survive extreme stresses if they are to function as intended. Those structures must be aerodynamically streamlined and attach to the outside of Starship’s hull, likely requiring significant structural reinforcements both inside the spacecraft’s nose and rearmost propellant tank.

Super Heavy?

SpaceX began construction of a second concrete fabrication jig just a handful of days ago. Effectively a copy of a jig occupied with the larger of the two barrel sections of the orbital Starship prototype, the simple structure acts as a mount and includes a large door that allows scissor lifts to get inside the steel structure. The new jig is being built directly adjacent to Starship’s smaller barrel section, suggesting that it could simply be a way to concurrently work on both the LOX and methane tanks. Given the inherent simplicity of a concrete jig, it could also end up being used to support the simultaneous assembly and integration of the first Super Heavy booster prototype.

Back in December 2018, SpaceX CEO Elon Musk indicated that the first Super Heavy prototype would start production in “spring” (i.e. NET April 2019). Musk has also indicated that Starship and Super Heavy will be simultaneously built both in Boca Chica, Texas and Cape Canaveral, Florida. In general, SpaceX is clearly beginning another round of expansion and improvement for its Boca Chica facilities, including the new concrete jig and an entirely new building on the same plot of land.

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SpaceX began filling the new jig with concrete on April 24th. (NASASpaceflight – bocachicagal)

Starhopper

Last but not least is SpaceX’s Starhopper prototype. After completing an inaugural round of multiple wet dress rehearsals (WDRs) and two Raptor static fires/hops, SpaceX technicians removed the vehicle’s lone Raptor engine on April 8th. Starhopper has remained more or less inactive in the last two weeks, aside from some work going on inside the vehicle (per the open access hatch).

Without a Raptor engine, there is admittedly not a whole lot that SpaceX can do with Starhopper, aside from additional WDRs if the first handful of tests were not enough. Instead, some minor work has been going on around the Hopper’s ad hoc pad, mainly taking the appearance of dirtmoving. Without aerial views, its hard to tell what exactly is taking shape, but it’s safe to say that Starhopper is simply waiting for additional Raptors to be produced, tested, and delivered to Boca Chica. Once more Raptors are ready, it’s understood that SpaceX will move into multi-engine (likely 3+) hop tests, perhaps loosing Starhopper from its tethers.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Elon Musk

SpaceX’s newest Starmind will make earth data centers obsolete

Elon Musk confirmed Starmind as SpaceX’s AI satellite constellation name, targeting one million orbital compute nodes.

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Elon Musk confirmed that Starmind will be the official name of SpaceX’s planned AI satellite constellation, following a trademark filing by xAI that surfaced earlier this week. Starmind is what’s being described to the FCC as a constellation of up to one million AI satellites

It’s worth noting that SpaceX’s Starlink communication satellite and Starmind are built on the same orbital infrastructure concept but serve entirely different purposes. Starlink is a connectivity network, with satellites receiving and relaying data between points on Earth, and functioning as a high-speed internet backbone in space. The satellites themselves do not process or think, and move information from one place to another, the same function a fiber cable performs underground.

SpaceX just forced Verizon, AT&T and T-Mobile to team up for the first time in history

Starmind, on the other hand, is something completely different, and tather than moving data, its satellites would compute data through artificial intelligence and directly in orbit using onboard processors powered by large solar arrays. Where a Starlink satellite is essentially a very fast pipe, a Starmind satellite is a server. The practical implication is that Starmind would allow AI models to run inference, process queries, and generate outputs from space, then beam results down to users anywhere on Earth within milliseconds, and without the data ever needing to travel to a terrestrial data center.

Starship will be able to carry 30 to 50 AI1 satellites per launch, delivering the equivalent of dozens of server racks per flight, with no land acquisition, no power grid approval, and no cooling infrastructure required on the ground.

SpaceX is pursuing this new technology as terrestrial data centers are running into hard limits such as lack of physical space, community opposition, and power and water consumption at a scale that is increasingly difficult to permit. Space has unlimited solar power, natural vacuum cooling, and no zoning boards. Musk said in a June 8 video presentation that he expects space to become the lowest-cost location to deploy AI compute within two to three years. Two AI1 prototypes are scheduled to launch in early 2027, with volume production targeted for the end of that year at a new facility called Gigasat.

The real world applications Starmind enables extend well beyond powering Grok. A constellation of orbiting AI processors could run inference workloads for any paying customer, anywhere on Earth, with latency measured in milliseconds rather than the seconds associated with ground-based cloud routing across continents. Starmind, if it scales as described, would make SpaceX the landlord of AI compute the same way Starlink made it the landlord of satellite internet.

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Investor's Corner

SpaceX makes $20 billion move to optimize its balance sheet

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Credit: SpaceX

SpaceX announced today that it commenced its first-ever public bond offering, marking a significant step in the newly public company’s capital markets strategy.

The company announced an offering of senior unsecured notes expected to raise at least $20 billion.

The move comes just a short time after SpaceX completed one of the largest initial public offerings in history. In mid-June, the company priced shares at $135 and raised more than $85 billion, propelling founder Elon Musk’s net worth past the trillion-dollar mark and giving the firm substantial liquidity.

According to the company’s SEC filing, the net proceeds from the notes will be used primarily to repay in full the outstanding borrowings under its existing bridge loan facility, cover related fees and expenses, and fund general corporate purposes. The offering is being conducted under Rule 144A, as well as Regulation S, targeting qualified institutional buyers and non-U.S. investors. Notes will be unsecured obligations ranking equally with other unsubordinated debt.

The $20 billion bridge loan was used to refinance approximately $17.5 billion in higher-cost “junk” debt tied to X and xAI. SpaceX had merged with xAI in February 2026 in an all-stock deal. The bridge facility, which matures in September 2027, had represented the bulk of SpaceX’s long-term debt.

SpaceX officially acquires xAI, merging rockets with AI expertise

In connection with the bond launch, SpaceX disclosed it held approximately $100.8 billion in cash and cash equivalents as of June 19. Investor calls began on the announcement date, with pricing and launch expected shortly thereafter. Rating agencies have assigned investment-grade ratings to the proposed bonds, reflecting confidence in SpaceX’s dominant position in commercial launches and the growth trajectory of its Starlink internet offering.

The debt raise also allows SpaceX to optimize its balance sheet by replacing short-term, higher-cost bridge financing with longer-date, lower-cost fixed-income securities. This provides greater financial flexibility to support capital-intensive initiatives, including the development of Starship, the expansion of the Starlink constellation, and the integration of AI capabilities following the xAI combination.

SpaceX shares (NASDAQ: SPCX) fell sharply on the news, dropping over 16 percent overall on the market on Monday. The stock had surged initially after debuting but pulled back amid profit-taking and broader market dynamics.

Overall, the bond offering underscores SpaceX’s transition to a mature public company with access to diverse funding sources. It positions the firm to pursue its long-term vision of multiplanetary expansion and AI infrastructure, while maintaining a disciplined approach to its capital structure in a high-growth but capital-heavy industry.

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Elon Musk

SpaceX confirms third massive compute deal at Colossus data center

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Credit: xAI Memphis

SpaceX confirmed today that it has officially signed its third massive compute deal, providing compute at its Colossus data center in Southaven, Mississippi.

Reflection AI will gain immediate access to NVIDIA GB300 chips at SpaceX’s Colossus 2 data center. In return, Reflection will pay SpaceX $150 million per month starting on July 1, with total payments reaching approximately $6.3 billion if the contract runs through its duration, which is until 2029. Either party can terminate the agreement with 90 days’ notice after the initial three-month period.

CNBC first reported the deal.

This latest partnership highlights SpaceX’s strategy of commercializing its massive Colossus supercomputing infrastructure, originally developed to power Elon Musk’s Grok AI models. The company has rapidly expanded its customer base in the AI sector following its February 2026 merger with xAI, a transaction that valued the combined entity at $1.25 trillion.

SpaceX has previously signed significant compute deals with other major players.

It granted Anthropic exclusive access to the full capacity of its Colossus 1 data center, which exceeds 300 megawatts and includes over 220,000 NVIDIA GPUs. Details from SpaceX’s IPO filings indicate Anthropic will pay $1.25 billion per month through May 2029, potentially generating around $45 billion over the term of the deal.

Additionally, Google agreed to pay SpaceX $920 million per month for compute capacity from October 2026 through June 2029. This 32-month period will provide Google access to roughly 110,000 NVIDIA GPUs, along with supporting processors and memory. Capacity ramps up through September at a reduced fee, with termination options after the first year.

SpaceXA also established arrangements for computing power with Cursor, an AI coding startup. SpaceX acquired them in a $60 billion all-stock deal.

SpaceX makes first acquisition post-IPO

These arrangements position SpaceX’s collective position as an AI infrastructure powerhouse with high-margin revenue potential. The Google deal alone could generate nearly $29.5 billion over its term, while the Reflection contract adds another $6.3 billion.

Combined with the Anthropic arrangement, SpaceX stands to realize tens of billions in revenue from compute leasing in the coming years, which diversifies beyond SpaceX’s traditional rocket launches and Starlink operation.

The deals underscore growing demand for advanced AI training and inference capacity amid chip shortages and surging model development needs. Reflection, valued at $25 billion and focused on “American open intelligence” with government and national security ties, cited recent restrictions on closed models as validation for open-source approaches.

For SpaceX, the partnerships transform capital-intensive data centers into flexible revenue sources while supporting its broader AI ambitions after the company has gone public.

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