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SpaceX Starship kicks off busy week of tests to prepare for flight debut

SpaceX technicians work on top of Starship SN5 ahead of the rocket's first static fire test. (NASASpaceflight - bocachicagal)

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After many delays, SpaceX’s fifth full-scale Starship prototype is almost ready for a busy week of crucial tests that will determine whether the rocket will become the first of its kind to take flight.

On June 24th, SpaceX lifted Starship serial number 5 (SN5) onto a robotic transporter and rolled the giant steel rocket about a mile down the road to the company’s nearby test facilities and launch pad. Already slowed down a number of weeks by Starship SN4’s explosive end a month prior, teams were in the middle of completing extensive pad repairs (and likely some upgrades, too). Nevertheless, about a week after arriving at the pad, SpaceX kicked off two important tests – both of which SN5 would need to pass to move on to bigger challenges.

Pass those tests Starship SN5 certainly did, completing an ambient temperature pressure test to check for leaks, immediately followed by a cryogenic proof test that proved the ship was structurally sound and ready for short hops. While significant, SpaceX has only tested SN5 (and its repaired pad systems) with benign liquid nitrogen – still extremely cold but chemically unreactive (i.e. nonexplosive). The pad repairs still need to be fully put through their paces with combustible liquid methane and oxygen propellant, as does Starship SN5. Enter today’s planned test.

Barring additional (rather likely) delays, SpaceX is scheduled to put Starship SN5 through its first fueling test(s) during a window stretching from 8am to 5pm CDT on Monday, July 20th. Assuming that the “fueling test” referred to in public road closure alerts is a routine wet dress rehearsal (WDR), the test will involve SpaceX loading Starship SN5 with a large volume of liquid oxygen and methane propellant – similar to but substantially riskier than a liquid nitrogen proof test. SpaceX actually appeared to briefly attempt such a test on July 17th but signs that Starship SN5 was pressurized quickly disappeared and the road closure was lifted, signaling an abort.

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Two and a half days of tweaks later, SpaceX’s July 19th closure was cancelled but the July 20th instance remains in place. If successful, Starship SN5 is expected to attempt to static fire its lone Raptor engine perhaps just a few days later, although that obviously assumes that both SN5 and the new pad hardware function perfectly during their biggest test yet.

(NASASpaceflight – bocachicagal)

Much like SN4’s several successful Raptor static fires, Starship SN5’s one or several tests aren’t expected to be any different. If the first test is a perfect success, proving that the rocket and Raptor engine SN27 are healthy and operating as a cohesive unit, SpaceX’s next goal is the flight debut of a full-scale Starship. Thanks to a broad FAA launch license effectively permitting unlimited suborbital Starship flight tests, SpaceX technically no longer has to stick to the 150m (~500 ft) ceiling originally set for Starhopper, but chances are good that it will still be the general target.

Stay tuned for an unofficial NASASpaceflight.com livestream of today’s planned Starship SN5 fuel test, should it remain on schedule.

(NASASpaceflight – bocachicagal)

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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 Semi expands pilot program to Texas logistics firm: here’s what they said

Mone said the Tesla Semi it put into its fleet for this test recorded 1.64 kWh per mile efficiency, beating Tesla’s official 1.7 kWh per mile target and delivering a massive leap over conventional diesel trucks.

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Credit: Mone Transport

Tesla has expanded its Semi pilot program to a new region, as it has made it to Texas to be tested by logistics from Mone Transport. With the Semi entering production this year, Tesla is getting even more valuable data regarding the vehicle and its efficiency, which will help companies cut expenditures.

Mone Transport operates in Texas and on the Southern border, and it specializes in cross-border U.S.-Mexico freight operations. After completing some rigorous testing, Mone shared public results, which stand out when compared to efficiency metrics offered by diesel vehicles.

“Mone Transport recently had the opportunity to put the Tesla Semi to the test, and we’re thrilled with the results! Over 4,700 miles of operations at 1.64 kWh/mile in our Texas operation. We’re committed to providing zero-emission transportation to our customers!” the company said in a post on X.

Mone said the Tesla Semi it put into its fleet for this test recorded 1.64 kWh per mile efficiency, beating Tesla’s official 1.7 kWh per mile target and delivering a massive leap over conventional diesel trucks.

Comparable Class 8 diesel semis, typically achieving 6-7 miles per gallon, consume roughly 5.5 kWh per mile in energy-equivalent terms, meaning the Semi uses three to four times less energy while also producing zero tailpipe emissions.

Tesla Semi undergoes major redesign as dedicated factory preps for deliveries

The performance of the Tesla Semi in Mone Transport’s testing aligns with data from other participants in the pilot program. ArcBest’s ABF Freight Division logged 4,494 miles over three weeks in 2025, averaging 1.55 kWh per mile across varied routes, including a grueling 7,200-foot Donner Pass climb. The truck “generally matched the performance of its diesel counterparts,” the carrier said.

PepsiCo, which operates the largest known Semi fleet, recorded 1.7 kWh per mile in North American Council for Freight Efficiency testing. Additional pilots showed similar gains: DHL hit 1.72 kWh per mile, and Saia achieved 1.73 kWh per mile.

These metrics underscore the Semi’s ability to slash operating costs through superior efficiency, lower maintenance, and zero-emission operation. As charging infrastructure scales and production ramps toward 2026 targets, participants like Mone Transport are proving electric semis can seamlessly integrate into freight networks, accelerating the industry’s shift to sustainable, high-performance trucking.

Tesla continues to prep for a more widespread presence of the Semi in the coming months as it recently launched the first public Semi Megacharger site in Los Angeles. It is working on building out infrastructure for regional runs on the West Coast initially, with plans to expand this to the other end of the country in the coming years.

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SpaceX weighs Nasdaq listing as company explores early index entry: report

The company is reportedly seeking early inclusion in the Nasdaq-100 index.

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Credit: SpaceX/X

Elon Musk’s SpaceX is reportedly leaning toward listing its shares on the Nasdaq for a potential initial public offering (IPO) that could become the largest in history. 

As per a recent report, the company is reportedly seeking early inclusion in the Nasdaq-100 index. The update was reported by Reuters, citing people familiar with the matter.

According to the publication, SpaceX is considering Nasdaq as the venue for its eventual IPO, though the New York Stock Exchange is also competing for the listing. Neither exchange has reportedly been informed of a final decision.

Reuters has previously reported that SpaceX could pursue an IPO as early as June, though the company’s plans could still change.

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One of the publication’s sources also suggested that SpaceX is targeting a valuation of about $1.75 trillion for its IPO. At that level, the company would rank among the largest publicly traded firms in the United States by market capitalization.

Nasdaq has proposed a rule change that could accelerate the inclusion of newly listed megacap companies into the Nasdaq-100 index.

Under the proposed “Fast Entry” rule, a newly listed company could qualify for the index in less than a month if its market capitalization ranks among the top 40 companies already included in the Nasdaq-100.

If SpaceX is successful in achieving its target valuation of $1.75 trillion, it would become the sixth-largest company by market value in the United States, at least based on recent share prices. 

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Newly listed companies typically have to wait up to a year before becoming eligible for major indexes such as the Nasdaq-100 or S&P 500.

Inclusion in a major index can significantly broaden a company’s shareholder base because many institutional investors purchase shares through index-tracking funds.

According to Reuters, Nasdaq’s proposed fast-track rule is partly intended to attract highly valued private companies such as SpaceX, OpenAI, and Anthropic to list on the exchange.

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The Boring Company’s Prufrock-2 emerges after completing new Vegas Loop tunnel

The new tunnel measures 2.28 miles, making it the company’s longest single Vegas Loop tunnel to date.

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Credit: The Boring Company/X

The Boring Company announced that its Prufrock-2 tunnel boring machine (TBM) has completed another Vegas Loop tunnel in Las Vegas. The company shared the update in a post on social media platform X.

According to The Boring Company’s post, the new tunnel measures 2.28 miles, making it the company’s longest single Vegas Loop tunnel to date.

The new tunnel marks the fourth tunnel constructed near Westgate Las Vegas as the Vegas Loop network continues expanding across the city.

The Boring Company also noted that the new tunnel surpassed its previous internal record of 2.26 miles for a single Vegas Loop segment.

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Construction of the tunnel involved moving roughly 68,000 cubic yards of dirt. The excavation process also used about 4.8 miles of continuous conveyor belt, powered by six motors totaling 825 horsepower.

The Boring Company’s Prufrock-series all-electric tunnel boring machines are designed to support the rapid expansion of company’s underground transportation projects, including the growing Vegas Loop network. Prufrock machines are designed for reusability, thanks in no small part to their capability to be deployed and retrieved easily through their “porposing” feature.

The Vegas Loop, specifically the Las Vegas Convention Center (LVCC) Loop segment, has already been used during major events. Most recently, the LVCC Loop supported the 2026 CONEXPO-CON/AGG construction trade show, which was held from March 3-7, 2026. 

As per The Boring Company, the LVCC Loop transported roughly 82,000 passengers across the convention center campus during the event’s duration. 

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CONEXPO-CON/AGG is one of the largest construction trade shows in North America, drawing more than 140,000 construction professionals from 128 countries this year.

The LVCC Loop forms the initial segment of the broader Vegas Loop network, which remains under active development as The Boring Company continues building new tunnels throughout the city.

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