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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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Starship Flight 9 nears as SpaceX’s Starbase becomes a Texan City

SpaceX’s launch site is officially incorporated as Starbase, TX. Starship Flight 9 could launch on May 27, 2025. 

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(Credit: Jenny Hautmann/Wikimedia Commons)

SpaceX’s Starbase is officially incorporated as a city in Texas, aligning with preparations for Starship Flight 9. The newly formed city in Cameron County serves as the heart of SpaceX’s Starship program.

Starbase City spans 1.5 square miles, encompassing SpaceX’s launch facility and company-owned land. A near-unanimous vote by residents, who were mostly SpaceX employees, led to its incorporation. SpaceX’s Vice President of Test and Launch, Bobby Peden, was elected mayor of Starbase. The new Texas city also has two SpaceX employees as commissioners. All Starbase officials will serve two-year terms unless extended to four by voters.

As the new city takes shape, SpaceX is preparing for the Starship Flight 9 launch, which is tentatively scheduled for May 27, 2025, at 6:30 PM CDT from Starbase, Texas.

SpaceX secured Federal Aviation Administration (FAA) approval for up to 25 annual Starship and Super Heavy launches from the site. However, the FAA emphasized that “there are other licensing requirements still to be completed,” including policy, safety, and environmental reviews.

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On May 15, the FAA noted SpaceX updated its launch license for Flight 9, but added: “SpaceX may not launch until the FAA either closes the Starship Flight 8 mishap investigation or makes a return to flight determination. The FAA is reviewing the mishap report SpaceX submitted on May 14.”

Proposed Texas legislation could empower Starbase officials to close local highways and restrict Boca Chica Beach access during launches. Cameron County Judge Eddie Trevino, Jr., opposes the Texas legislation, insisting beach access remain under county control. This tension highlights the balance between SpaceX’s ambitions and local interests.

Starbase’s incorporation strengthens SpaceX’s operational base as it gears up for Starship Flight 9, a critical step in its mission to revolutionize space travel. With growing infrastructure and regulatory hurdles in focus, Starbase is poised to become a cornerstone of SpaceX’s vision, blending community development with cutting-edge aerospace innovation.

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United Airlines debuts Starlink Wi-Fi on Detroit flight

United’s first passenger flight with Starlink Wi-Fi just landed in Detroit. Mainline flights to follow by year-end.

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(Credit: United Airlines)

United Airlines debuted Starlink Wi-Fi on its first passenger flight to Detroit, marking a milestone in in-flight connectivity with SpaceX’s satellite internet.

On Thursday, the morning flight from Chicago’s O’Hare International Airport introduced high-speed, gate-to-gate Starlink internet for United Airlines passengers. The Starlink-equipped United Embraer E-175, tail number UA5717, departed at 7:35 a.m. for Detroit Metropolitan Airport.

United announced the rollout on X, stating, “That lightning-fast Wi-Fi we told you about? It’s here. Our first customers just found out what it’s like to break the Wi-Fi barrier and stream, scroll, shop, and game just like at home with Starlink. And it’s FREE for MileagePlus members. Rolling out across our fleet now.”

The service leverages Starlink’s 7,000+ low Earth orbit (LEO) satellites to deliver broadband globally, including in remote areas. United is the only major U.S. airline currently offering Starlink. The airline plans to expand the service across its two-cabin regional fleet and introduce it on mainline flights by year-end.

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Sean Cudahy from The Points Guy tested Starlink’s Wi-Fi pre-launch, praising its ease and reliability. “I ran a speed test, and it clocked the Wi-Fi at 217 Mbps of download speed, and 26.8 Mbps of upload speed,” Cudahy shared, noting its suitability for long flights.

Beyond aviation, SpaceX is pitching Starlink as a GPS alternative, emphasizing its potential for Positioning, Navigation, and Timing (PNT) services. This dual capability underscores Starlink’s versatility.

In a letter to the FCC, SpaceX wrote, “One opportunity stands out as a particularly ripe, low-hanging fruit: facilitating the rapid deployment of next-generation low-Earth orbit (‘LEO’) satellite constellations that can deliver PNT as a service alongside high-speed, low-latency broadband and ubiquitous mobile connectivity.”

As SpaceX expands Starlink’s applications, from aviation to navigation, United’s adoption signals a broader shift toward satellite-driven connectivity on long flights. With plans to equip more aircraft, United and Starlink are redefining in-flight internet, promising seamless digital access at 30,000 feet.

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SpaceX touts Starlink as GPS alternative in FCC PNT push

SpaceX highlighted Starlink’s potential to deliver PNT services alongside its broadband offerings.

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SpaceX is positioning its Starlink constellation as a viable GPS alternative. In a letter to the Federal Communications Commission (FCC), SpaceX stated that it could leverage Starlink satellites for next-generation Positioning, Navigation, and Timing (PNT) solutions.

GPS has been run through a single provider in the United States, the Defense Department. The FCC intends to use Positioning, Navigation, and Timing (PNT) solutions to complement GPS technologies. In its letter, SpaceX highlighted Starlink’s potential to deliver PNT services alongside its broadband offerings in its letter to the FCC.

“As the Commission identifies specific actions to contribute to the whole-of-government PNT system resilience effort, one opportunity stands out as a particularly ripe, low-hanging fruit: facilitating the rapid deployment of next-generation low-Earth orbit (‘LEO’) satellite constellations that can deliver PNT as a service alongside high-speed, low-latency broadband and ubiquitous mobile connectivity,” SpaceX wrote.

SpaceX also emphasized its ongoing work to integrate PNT into its cellular Starlink service, which is expected to be launched with T-Mobile in July. The private space provider also stated that Starlink satellites already operate independently of GPS. This lays the groundwork for resilient PNT delivery across authorized frequencies, SpaceX noted in its letter.

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“SpaceX has also been actively working to integrate PNT solutions into its direct-to-device commercial service offerings. In so doing, SpaceX can advance the Commission’s goal in this proceeding to maintain American leadership in next-generation PNT services both here at home and in over 130 countries it serves around the world.

“SpaceX looks forward to playing an integral role in creating a more robust, resilient, and secure PNT ecosystem for Americans and people around the world,” SpaceX noted.

SpaceX also advocated for a “technology-neutral approach” to GPS alternatives in its letter, while critiquing EchoStar’s unused 2GHz spectrum for mobile satellite services. Meanwhile, Globalstar, Apple’s satellite provider, also pitched its services as a GPS complement, stating that its services “can function as either an alternative or a complement to GPS.”

“Notably, Globalstar’s satellites transmit outside of the L-band, which provides PNT users with added immunity from GPS jamming and spoofing. In addition, Globalstar’s satellite transmissions at 2.4GHz are stronger than GPS signals, bolstering resilience, performance, and reliability,” GlobalStar noted.

SpaceX’s letter to the FCC can be viewed below.

Starlink GPS FCC by maria on Scribd

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