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SpaceX’s Starship prototype set for first serious test after Raptor engine installed

Starhopper conducts a propellant tank pressure regulation test on March 18th. (NASASpaceflight - bocachicagal)

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In concert with South Texas’ Cameron County, SpaceX has officially scheduled the first serious test – requiring temporary road closures – of its Starship prototype, unofficially nicknamed ‘Starhopper’ in light of its ultimate goal of performing low-altitude, low-velocity hop tests.

SpaceX technicians have already successfully completed a number of unspecified tanking tests – likely with chemically neutral liquid nitrogen – and completed acceptance and installation of Raptor serial number 02 (SN02), setting the stage for the giant testbed’s first flight-critical tests. Now set to occur between 10am and 4pm local time (8am2pm Pacific, 15:00-21:00 UTC), that test debut will likely see Starhopper topped to the brim with liquid methane and oxygen propellant for the first time, potentially transitioning into the first BFR-integrated Raptor static fire test.

Scarcely seven days after the engine’s arrival in Boca Chica, SpaceX technicians completed the first-ever installation of a flight-ready Raptor – SN02 – on a full-scale BFR prototype known as Starhopper. Aside from marking a major symbolic milestone for the company’s next-generation rocket development program, the installation of a functional rocket engine on the first partial-fidelity vehicle prototype means that SpaceX can now enter into a new and critical stage of development: integrated flight testing.

Assuming (hopefully) that SpaceX has yet to conduct actual fueling tests of the Starship prototype without establishing roadblocks and safety perimeters, something that would be an egregious threat to nearby locals, it’s likely that this first major test – much like SpaceX’s established Falcon 9 and Heavy test regime – will involve a process known as a Wet Dress Rehearsal (WDR). A WDR would see Starhopper loaded with liquid methane and oxygen propellant – potentially anywhere from the bare minimum needed to operate a single Raptor to completely filling its tanks – to verify that the prototype’s complex plumbing system and giant tanks are operating nicely together under flight conditions (i.e. cryogenic temperatures, thermal and mechanical stresses, chemical environments, etc.). Much like routine Falcon 9 static fire tests performed both at SpaceX’s McGregor, TX test site and the launch pad, data indicating that the rocket is behaving nominally during the WDR allows the operations team to transition smoothly from a WDR into a captive static fire test, in which the vehicle’s engine(s) are briefly ignited to simulate the first few seconds prior to liftoff.

It’s relatively rare but not unusual for planned Falcon 9 or Heavy static fire tests to end during the WDR phase in cases where the launch team observes data that appears to be less than nominal. SpaceX generally takes a “better safe than sorry” approach to these sorts of operations, swallowing the costs and risk of raising customers’ ire due to delays in order to ensure the highest probability of complete launch success.

For a vehicle as utterly new and alien as Starhopper is to both SpaceX and the aerospace industry as a whole, it’s safe to say that that tendency towards caution will be readily on display throughout these first several tests, at least until the company’s operations technicians and engineers are considerably more familiar with the prototype rocket’s behavior. On the other hand, given just how shoestring the budget of this beast likely is and how rapidly SpaceX managed to go from an empty dirt lot to a hop-test-ready, 30ft/9m-diameter Starship prototype, it’s equally likely that the company – particularly CEO Elon Musk – will accept the increased risk of catastrophic vehicle failures to keep the development program as agile as possible.

According to CEO Elon Musk, this large metal cylinder is actually one of the barrel sections of the first orbital Starship prototype. Workers are welding the sections together outside, rain or shine. (NASASpaceflight – bocachicagal)
Starhopper makes its own clouds during tanking tests on March 14th. (NASASpaceflight – bocachicagal)

As Musk himself frequently and famously is known to say, it’s far better to push hardware to failure during early testing than it is to hold back and risk largely unplanned failures during nominal operations, a lesson that SpaceX itself has learned the hard way several times. One step further, while they are at best undeniably inconvenient and expensive, major vehicle failures during testing can actually be an invaluable source of data that ultimately improves the system as a whole. For BFR, a launch vehicle meant to safely, routinely, and reliably transport as many as 100+ people both around the Earth and solar system, all possible opportunities to learn and improve the system prior to risking the lives of passengers will be an absolute necessity if SpaceX wants to ensure that customers remain willing to trust the company and its spacecraft with their lives.

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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

Elon Musk gives nod to SpaceX’s massive, previously impossible feat

It was the booster’s 30th flight, a scenario that seemed impossible before SpaceX became a dominant force in spaceflight. 

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Credit: SpaceX/X

Elon Musk gave a nod to one of SpaceX’s most underrated feats today. Following the successful launch of the Transporter-15 mission, SpaceX seamlessly landed another Falcon 9 booster on a droneship in the middle of the ocean. 

It was the booster’s 30th flight, a scenario that seemed impossible before SpaceX became a dominant force in spaceflight. 

Elon Musk celebrates a veteran Falcon 9 booster’s feat

SpaceX completed another major milestone for its Smallsat Rideshare program on Friday, successfully launching and deploying 140 spacecraft aboard a Falcon 9 from Vandenberg Space Force Base. The mission, known as Transporter-15, lifted off two days later than planned after a scrub attributed to a ground systems issue, according to SpaceFlight Now. SpaceX confirmed that all payloads designed to separate from the rocket were deployed as planned.

The Falcon 9 used for this flight was booster B1071, one of SpaceX’s most heavily flown rockets. With its 30th mission completed, it becomes the second booster in SpaceX’s fleet to reach that milestone. B1071’s manifest includes five National Reconnaissance Office missions, NASA’s SWOT satellite, and several previous rideshare deployments, among others. Elon Musk celebrated the milestone on X, writing “30 flights of the same rocket!” in his post. 

Skeptics once dismissed reusability as unfeasible

While rocket landings are routine for SpaceX today, that was not always the case. Industry veterans previously questioned whether reusable rockets could ever achieve meaningful cost savings or operational reliability, often citing the Space Shuttle’s partial reusability as evidence of failure. 

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In 2016, Orbital ATK’s Ben Goldberg argued during a panel that even if rockets could be reusable, they do not make a lot of sense. He took issue with Elon Musk’s claims at the time, Ars Technica reported, particularly when the SpaceX founder stated that fuel costs account for just a fraction of launch costs. 

Goldberg noted that at most, studies showed only a 30% cost reduction for low-Earth orbit missions by using a reusable rocket. “You’re not going to get 100-fold. These numbers aren’t going to change by an order of magnitude. They’re just not. That’s the state of where we are today,” he said. 

Former NASA official Dan Dumbacher, who oversaw the Space Launch System, expressed similar doubts in 2014, implying that if NASA couldn’t make full reusability viable, private firms like SpaceX faced steep odds.

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SpaceX’s Starship program is already bouncing back from Booster 18 fiasco

Just over a week since Booster 18 met its untimely end, SpaceX is now busy stacking Booster 19, and at a very rapid pace, too. 

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Credit: SpaceX/X

SpaceX is already bouncing back from the fiasco that it experienced during Starship Booster 18’s initial tests earlier this month.

Just over a week since Booster 18 met its untimely end, SpaceX is now busy stacking Booster 19, and at a very rapid pace, too. 

Starship V3 Booster 19 is rising 

As per Starbase watchers on X, SpaceX rolled out the fourth aft section of Booster 19 to Starbase’s MegaBay this weekend, stacking it to reach 15 rings tall with just a few sections remaining. This marks the fastest booster assembly to date at four sections in five days. This is quite impressive, and it bodes well for SpaceX’s Starship V3 program, which is expected to be a notable step up from the V2 program, which was retired after a flawless Flight 11. 

Starship watcher TankWatchers noted the tempo on X, stating, “During the night the A4 section of Booster 19 rolled out to the MegaBay. With 4 sections in just 5 days, this is shaping up to be the fastest booster stack ever.” Fellow Starbase watcher TestFlight echoed the same sentiments. “Booster 19 is now 15 rings tall, with 3 aft sections remaining!” the space enthusiast wrote. 

Aggressive targets despite Booster 18 fiasco

SpaceX’s V3 program encountered a speed bump earlier this month when Booster 18, just one day after rolling out into the factory, experienced a major anomaly during gas system pressure testing at SpaceX’s Massey facility in Starbase, Texas. While no propellant was loaded, no engines were installed, and no one was injured in the incident, the unexpected end of Booster 18 sparked speculation that the Starship V3 program could face delays.

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Despite the Booster 18 fiasco, however, SpaceX announced that “Starship’s twelfth flight test remains targeted for the first quarter of 2026.” Elon Musk shared a similar timeline on X earlier this year, with the CEO stating that “ V3 is a massive upgrade from the current V2 and should be through production and testing by end of year, with heavy flight activity next year.”

Considering that Booster 19 seems to be moving through its production phases quickly, perhaps SpaceX’s Q1 2026 target for Flight 12 might indeed be more than feasible.

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Elon Musk shares SpaceX’s directive that destroys a prevalent media narrative

Musk’s comments followed Starlink’s initiatives for people affected by severe flooding in Indonesia and Cyclone Ditwah in Sri Lanka.

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UK Government, CC BY 2.0 , via Wikimedia Commons

Elon Musk recently shared SpaceX’s standing policy to offer free Starlink service during natural disasters worldwide, highlighting the company’s commitment to pursue aid over profit during times of need. 

Musk’s comments followed Starlink’s initiatives for people affected by severe flooding in Indonesia and Cyclone Ditwah in Sri Lanka.

Starlink activates free service in Indonesia and Sri Lanka

Starlink recently announced free service for those impacted by severe flooding in Indonesia’s Sumatra region, partnering with the government to deploy terminals rapidly to the hardest-hit areas. The offer extends to new and existing customers through December, restoring connectivity in zones where traditional networks have failed due to infrastructure damage.

Musk quoted the post on X, writing, “SpaceX standard policy is to make Starlink free whenever there is a natural disaster somewhere in the world. It would not be right to profit from misfortune.”

Starlink extended the same relief to Sri Lanka amid Cyclone Ditwah, coordinating with local authorities for additional support. The cyclone battered the island nation with heavy rains and winds, disrupting communications for thousands. Free access also lasts until year-end, emphasizing Starlink’s role in bridging gaps during crises.

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“For those affected by the severe flooding in Indonesia and Sri Lanka in the aftermath of Cyclone Ditwah, Starlink is providing free service to new and existing customers through the end of December 2025. We’re also working with the Indonesian government to rapidly deploy terminals and restore connectivity to the hardest-hit areas on Sumatra, as well as with the Sri Lankan government to provide additional assistance,” Starlink wrote in a post on its official website. 

Musk’s companies routinely provide aid

Musk’s firms have a track record of providing critical support in crises, often without fanfare, challenging portrayals of him as a comic book villain intent on enriching himself on the backs of a suffering populace. In January 2024 alone, Tesla opened Superchargers for free in Japan’s Hokuriku region after a magnitude 7.6 earthquake killed at least 55 and injured hundreds.

Similar efforts include Starlink deployments for the 2023 Maui wildfires, 2024 Hurricane Helene in North Carolina, and floods in Texas, where the service was used to help facilitate emergency coordination. These actions, which total millions in waived fees and logistics, demonstrate a proactive ethos among Musk’s companies, with Musk noting in past interviews that such aid stems from engineering solutions over optics.

The initiatives also provide a direct rebuttal of Musk’s characterization on mainstream media, which tends to lean negatively. This has become much more notable in recent years as Musk adopted more conservative policies. These negative sentiments came to a head earlier this year when Tesla stores, vehicles, and even some owners, were attacked during waves of anti-Tesla protests.

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