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A SpaceX Starship prototype just lifted off – but not how it was supposed to

SpaceX's second full-scale Starship prototype suffered a catastrophic failure during its first (and now last) pressure test. (NASASpaceflight - bocachicagal)

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SpaceX’s newest Starship spacecraft prototype unintentionally lifted off during a critical test at the company’s Boca Chica, Texas facilities – a development that was almost certainly unplanned.

On February 26th, under the cover of an incredibly thick fog bank, SpaceX carefully transported its second full-scale Starship prototype – measuring some 30m (100 ft) tall and 9m (30 ft) wide – to its Boca Chica, Texas launch and test pad, situated just a mile or so down the road from an ever-growing rocket factory. After just two days of last-second work spent outfitting the giant rocket tank with a few additional sensors and fully connecting it to ground systems (electricity, communications, and fluids), SpaceX kicked off the second cryogenic ‘proof’ test of an integrated Starship tank section.

An opaque layer of frost quickly developed on the ship’s mirror-smooth hull, effectively serving as a giant gauge for the liquid nitrogen pooling inside it. About an hour after faux-propellant (liquid nitrogen) loading began, Starship SN01’s liquid oxygen tank violently burst, causing the entirety of the vehicle’s 30-40 metric ton (65,000-90,000 lb) bulk to launch several dozen feet into the air. Stacked atop the oxygen tank, SN01’s methane tank – likely pressurized with nitrogen or oxygen gas – shot off like a house-sized bullet when the rest of the tank section impacted the ground, flying some 150-300+ meters (500-1000 ft) from the pad.

Starship SN01 is pictured before… (NASASpaceflight – bocachicagal)
…and after its first and last ‘flight’, of sorts. (NASASpaceflight – bocachicagal)

Long-time Boca Chica resident, photographer, and videographer Mary (also known as “bocachicagal” on forums) captured the seemingly unintentional Starship failure in spectacular detail on February 28th. Given how high the heavy vehicle jumped after its aft tank dome failed, as well as how fast the house-sized methane tank flew after it breached, it’s safe to say that both were significantly pressurized before the anomaly.

What’s unclear is what exactly went wrong with Starship SN01 and whether SpaceX expected it to fail during the test. Known as a cryogenic proof test, SpaceX pressurized the ship’s tanks with liquid nitrogen and a gas of some kind in an effort to verify its structural integrity and determine if it was safe to proceed to more risky tests. According to CEO Elon Musk, Starship SN01 was actually meant to support a full wet dress rehearsal (WDR) with liquid oxygen and methane, followed by a Raptor engine static fire test shortly thereafter.

These are just the Starship SN02 rings that happen to be out in the open – many more are likely being assembled inside SpaceX’s two massive tents. (SPadre)

That plan is clearly moot, now, and also seems to indicate that SpaceX is likely somewhat surprised about the outcome of SN01’s first proof test. Thankfully, this particular Starship was built quickly (and thus likely cheaply), coming together in an unfathomable four weeks. Additionally, SpaceX’s second serial Starship prototype (SN02) is already well on its way to the launch pad, with multiple sections of stacked steel rings in work. Based on the four or so weeks SN01 took to go from first weld to pressure test, SN02 could be just two or three weeks away from its own proof test debut.

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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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Tesla’s Roadster appearance at SpaceX has merger watchers talking

Tesla’s next generation Roadster was spotted at SpaceX’s Hawthorne headquarters, two weeks after its unveiling.

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The Roadster’s rear wing, one of the aerodynamic elements Tesla pairs with a fan-based downforce system. (Image: Tesla)

Tesla’s next generation Roadster turned up at SpaceX’s headquarters in Hawthorne, California on Wednesday, less than two weeks after the car flew off a ramp at its unveiling in Texas.

Photos shared on X by SpaceX Engineer (@DeannaRiceSPCX) show the new Roadster parked outdoors beside the famed Falcon 9 that stands outside company headquarters at the corner of Crenshaw Boulevard and Jack Northrop Avenue. Rocket B1019 was the first orbital-class booster ever to land after a launch on December 21, 2015 after it sent 11 Orbcomm satellites to orbit and then flew back to Landing Zone 1 at Cape Canaveral, which would be the first landing in what became SpaceX’s reusable rocket program. SpaceX chose not to fly it again. After a test fire in Florida, the booster was shipped to Hawthorne and raised upright as a permanent monument in August 2016, as Teslarati reported at the time. Putting the Roadster, which flies on SpaceX cold gas thrusters, next to the rocket that started SpaceX’s landings is symbolic in itself.

The Thrust and Rocket versions of the Roadster use cold gas thrusters fed by composite overwrapped pressure vessels, the same type of tank SpaceX flies on Falcon 9, and Elon Musk described the car as the work of Tesla and SpaceX engineers working together. Tesla lists 0 to 60 mph in under 0.9 seconds for Thrust and under 0.59 seconds for Rocket, while the base Performance model relies on a fan and ground sealing system for grip, as Teslarati detailed in its breakdown of the three Roadster configurations.

Tesla has kept the car in the spotlight since the October 15 event near Waco. Last week, the company posted a video of the Roadster’s fighter jet inspired cockpit, including a Track Mode screen with a “Thruster · 5,500 PSI” readout, which we covered in our look at the Roadster’s center display. Musk also said owners will be able to ask the car to perform the stunts autonomously, and promised a looping track at Tesla’s Texas headquarters.

The visit comes as special committees at Tesla and SpaceX weigh a possible merger, a step Musk confirmed on SpaceX’s third quarter earnings call. The Roadster, built on SpaceX hardware, has become one of the clearest examples of the two companies already building products together.

Musk said at the unveiling that Roadster production will begin in 2028. Reservations are open with a $50,000 payment, Thrust is listed as a limited release and Rocket is invite only. Tesla says the car is not approved for public road use.

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Verizon, AT&T and T-Mobile are trying to shut Starlink out before FCC vote

AT&T, Verizon and T-Mobile want 290 MHz cut from an FCC satellite plan before Thursday.

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Starlink D2D direct to device vs Verizon, AT&T (Concept render by Grok)

AT&T, Verizon and T-Mobile are asking the Federal Communications Commission to pull nearly 300 MHz of spectrum out of a proposal that would let satellite companies like SpaceX offer cell service directly to ordinary phones. The request lands one day before the agency votes on it.

The FCC will vote Thursday, October 29, on a notice of proposed rulemaking that would make an additional 482 MHz available for direct to device service, expanding the number of eligible bands from five to 13, according to the FCC fact sheet. It would also scrap the rule requiring a satellite operator to lease spectrum from carriers, replacing it with a certification that the operator has coexistence agreements in place or holds the terrestrial license itself.

That second path matters for SpaceX. As Teslarati reported earlier this month, SpaceX agreed to buy Grain Management’s nationwide 800 MHz portfolio to turn Starlink Mobile into a full US carrier, adding to the spectrum it already bought from EchoStar.

The carriers want two bands removed, 2.5 GHz and 3.45 GHz, which make up 290 MHz of the 482 MHz on the table. Through industry group CTIA, they argued that about 300 million users depend on those bands and that satellite operations in them are not technically feasible. T-Mobile, which calls 2.5 GHz the foundation of its Ultra Capacity 5G network, said in its own filing that satellite interference could wipe out up to 96% of a cell site’s uplink coverage area and cut uplink speeds by 88% to 99%.

Executives from all three carriers met with FCC staff on October 20, and T-Mobile CEO Srini Gopalan met separately with FCC Chairman Brendan Carr. T-Mobile’s role stands out because it is still SpaceX’s US launch partner for Starlink Mobile. The three carriers have also teamed up on their own satellite joint venture to pool spectrum, a move widely seen as a response to Starlink.

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SpaceX is asking for the opposite. In an October 23 filing after meetings with FCC staff and commissioners’ offices, the company asked regulators to add the 902 to 928 MHz band to the proposal. “Doing so now saves time later,” SpaceX wrote. The company also asked the FCC to modernize interference rules and align satellite deployment requirements with those for terrestrial cell networks, saying the goal is to let satellite and ground networks work together so Americans stay connected wherever they are.

The carriers have not been shy about how they view SpaceX as a competitor. On Verizon’s third quarter earnings call Monday, its chief executive said Starlink Mobile “just can’t compete with a terrestrial network” and estimated SpaceX would need four to six years and $300 billion to $500 billion to build a full US carrier network.

Thursday’s vote will not settle which bands survive. Adopting the notice opens a public comment period, with final rules to come later in the proceeding. The FCC already considered and rejected 2.5 GHz for satellite coverage once, in 2024. SpaceX also is not the only satellite player watching: the FCC approved Amazon’s $11.6 billion acquisition of Globalstar on October 27, giving its planned direct to device fleet its own mobile satellite spectrum.

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Tesla Semi catches fire in California: what we know

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Credit: KTVU

A Tesla Semi caught fire in Hayward, California, which caused both directions of traffic to shut down for hours before being completely reopened early on Wednesday, the California Highway Patrol said.

The fire occurred just after 5:30 local time in Hayward on Tuesday, as the Semi caught fire in the southbound lanes of I-880 before CHP officials made the decision to shut down both lanes of traffic due to potential risks from hazardous chemical smoke.

There were no injuries reported.

The cause of the fire is currently unknown, as neither Tesla nor the CHP have not determined a cause.

However, some images taken before the Semi was completely destroyed by the fire seem to indicate this might have been an older unit, as it appears to be one of the designs that Tesla shipped as part of its pilot program, before revising it and starting mass production just a month ago.

At the time of publication, CHP had not returned our request for a comment for additional details, including the Semi involved and any potential collaboration on an investigation between the CHP and Tesla. We will update this story when we hear back from them.

The southbound lanes were reopened at 3:30 a.m. on Wednesday, with the northbound lanes opening last night a few hours after the fire began. The CHP did state that the lithium batteries were “incredibly difficult to extinguish,” according to NBC Bay Area.

The truck’s driver said that the Semi caught fire, but he did not have an explanation.

An estimated 5,000 to 7,000 semi-truck and large commercial vehicle fires occur on U.S. roadways every year.

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