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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.

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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Lufthansa Group to equip Starlink on its 850-aircraft fleet

Under the collaboration, Lufthansa Group will install Starlink technology on both its existing fleet and all newly delivered aircraft, as noted by the group in a press release.

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Credit: Lufthansa

Lufthansa Group has announced a partnership with Starlink that will bring high-speed internet connectivity to every aircraft across all its carriers. 

This means that aircraft across the group’s brands, from Lufthansa, SWISS, and Austrian Airlines to Brussels Airlines, would be able to enjoy high-speed internet access using the industry-leading satellite internet solution.

Starlink in-flight internet

Under the collaboration, Lufthansa Group will install Starlink technology on both its existing fleet and all newly delivered aircraft, as noted by the group in a press release

Starlink’s low-Earth orbit satellites are expected to provide significantly higher bandwidth and lower latency than traditional in-flight Wi-Fi, which should enable streaming, online work, and other data-intensive applications for passengers during flights.

Starlink-powered internet is expected to be available on the first commercial flights as early as the second half of 2026. The rollout will continue through the decade, with the entire Lufthansa Group fleet scheduled to be fully equipped with Starlink by 2029. Once complete, no other European airline group will operate more Starlink-connected aircraft.

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Free high-speed access

As part of the initiative, Lufthansa Group will offer the new high-speed internet free of charge to all status customers and Travel ID users, regardless of cabin class. Chief Commercial Officer Dieter Vranckx shared his expectations for the program.

“In our anniversary year, in which we are celebrating Lufthansa’s 100th birthday, we have decided to introduce a new high-speed internet solution from Starlink for all our airlines. The Lufthansa Group is taking the next step and setting an essential milestone for the premium travel experience of our customers. 

“Connectivity on board plays an important role today, and with Starlink, we are not only investing in the best product on the market, but also in the satisfaction of our passengers,” Vranckx said. 

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Elon Musk

SpaceX gains favor as Pentagon embraces Musk-style defense reform

The remarks highlighted Musk’s improving relationship with the White House, as well as SpaceX’s growing role in U.S. defense.

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Credit: @SecWar/X

SpaceX emerged as a clear beneficiary of the Trump administration’s renewed push to accelerate military innovation, as Defense Secretary Pete Hegseth openly praised Elon Musk’s private space enterprise during a visit to the company’s Starbase launch site in Texas. 

The remarks highlighted Musk’s improving relationship with the White House, as well as SpaceX’s growing role in U.S. defense.

Hegseth embraces Elon Musk’s pace

Speaking at SpaceX’s Starbase facility in Brownsville, Texas, Hegseth criticized what he described as a “risk-averse culture” among traditional defense contractors and called for faster innovation modeled after Musk’s approach. He confirmed that the Department of Defense plans to integrate Musk’s Grok AI platform into Pentagon systems, which is part of the administration’s efforts to make the U.S. military an “AI-first warfighting force.”

Hegseth stated that the Pentagon intends to deploy AI models across both classified and unclassified networks, signaling a willingness to push past earlier efforts to limit military use of artificial intelligence. His comments aligned closely with President Donald Trump’s recent call for a $500 billion increase in defense spending, Bloomberg News noted. Trump has also warned major contractors that slower production and shareholder-focused practices could put future contracts at risk.

While Hegseth criticized legacy defense firms, SpaceX was held up as an example of how aggressive timelines, vertical integration, and iterative development could reshape defense strategies. “We need to be blunt here; we can no longer afford to wait a decade for our legacy prime contractors to deliver a perfect system. Winning requires a new playbook. Elon wrote it with his algorithm: question every requirement, delete the dumb ones and accelerate like hell,” Hegseth said.

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SpaceX’s expanding defense role comes into focus

SpaceX has become one of the U.S. government’s most important aerospace partners. The company holds roughly $4 billion in NASA contracts to develop Starship into a lunar lander, while also serving as a key launch provider for sensitive national security payloads using its Falcon 9 and Falcon Heavy rockets.

During the visit, Musk highlighted that his ambitions extend beyond defense contracts, reiterating long-term goals of interplanetary travel and eventual exploration beyond the solar system. Still, the optics of the event reinforced how closely SpaceX’s capabilities now align with U.S. strategic priorities.

The appearance also marked another step in Musk’s political rehabilitation after a public falling-out with the White House last year. Since leaving his role leading the Department of Government Efficiency, Musk has gradually reengaged with the administration, reconnecting with U.S. President Donald Trump during slain conservative activist Charlie Kirk’s tribute and attending events at the White House. Trump’s also recently suggested that Starlink could help restore internet access in Iran.

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Donald Trump turns to Elon Musk and Starlink amid Iran internet blackout

Donald Trump has stated that he plans to speak with SpaceX CEO Elon Musk about restoring internet access in Iran.

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Credit: Starlink/X

Donald Trump has stated that he plans to speak with SpaceX CEO Elon Musk about restoring internet access in Iran, as authorities in the country implement an internet blackout amid nationwide anti-government protests. 

Trump points to Starlink

Speaking to reporters in Washington, Trump said Musk would be well-suited to help restore connectivity in Iran, citing his experience operating large-scale satellite networks, as noted in a Reuters report. “He’s very good at that kind of thing, he’s got a very good company,” Trump said. 

Iran has experienced a near-total internet shutdown for several days, severely limiting the flow of information as protests escalated into broader demonstrations against the country’s rulers.

Starlink has previously been used in Iran during periods of unrest, allowing some users to access the global internet despite government blocks. Neither Musk nor SpaceX immediately commented on Trump’s remarks, but Musk has publicly supported efforts to provide Starlink access to Iranians during earlier periods of unrest.

Renewed Trump–Musk ties

Trump’s comments come amid a thaw in his previously strained relationship with Musk. The two had a public falling-out last year over domestic policy disagreements but have since appeared together publicly, including at Trump’s Mar-a-Lago resort. The renewed ties now intersect with foreign policy, as Starlink has become a strategic tool in regions facing censorship or conflict.

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The satellite service has also played a prominent role elsewhere, most notably in Ukraine, highlighting both its potential impact and the political sensitivities surrounding its use. In Iran, Starlink support previously followed coordination between Musk and U.S. officials during protests in 2022.

The current internet blackout in Iran has drawn international attention, with rights groups estimating hundreds of deaths and thousands of arrests since demonstrations intensified late last year. Iranian authorities have not released official casualty figures, and outside verification remains limited due to restricted communications.

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