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SpaceX Starship passed “cryo proof” test for the first time and here’s what’s next

A SpaceX Starship rocket just passed a critical "cryo proof" test for the first time. (NASASpaceflight - bocachicagal)

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Elon Musk says a SpaceX Starship prototype has passed a critical “cryo proof” test for the first time, opening the door for the rocket to move on to even bigger tests.

Late on April 26th, SpaceX’s South Texas team (and possibly a console team in California) readied the fourth full-scale Starship prototype (SN4) for its second major test. Known as a cryogenic proof test, it began less than 24 hours after the rocket completed a room-temperature gas pressure test to check for leaks and verify that the pressure vessel was sound. Musk quickly confirmed that Starship SN4 passed through that “ambient proof test” without issue.

For the cryo proof test, room-temperature nitrogen gas was replaced with ultra-cold liquid nitrogen, serving as a chemically neutral (i.e. non-explosive) simulant for Starship’s liquid oxygen and methane propellant. After a few hours of partial loading and offloading cycles meant to ensure that Starship’s valves and propellant supply hardware was working as intended, SpaceX controllers fully filled the rocket with some ~1000 metric tons (2.2 million lb) of liquid nitrogen. Once full, a hydraulic ram setup was activated to exert forces akin to Raptor engines operating at full thrust. After several prior failures, Starship SN4 thus became the first to survive the ordeal and graduate into the next stage of testing.

According to CEO Elon Musk, that next step will be a static fire test with a lone Raptor engine installed. Able to produce at least 200 metric tons of thrust (~450,000 lbf) at full throttle, Raptor is an exceptionally efficient methalox (methane/oxygen) rocket engine designed by SpaceX to power Starship and its Super Heavy booster. Methane and oxygen was chosen in large part because of the relative potential ease of its extraction and refinement on Mars.

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Per Musk, that static fire could occur within the next six or so days, meaning that SpaceX will likely install a functional Raptor engine on a full-scale Starship for the first time ever within the next day or two. Before a static fire can be performed, though, another significant test or two will have to be completed.

Known as a wet dress rehearsal (WDR), the first of those tests will be similar to April 26th’s cryo proof but with the neutral liquid nitrogen placed by real liquid oxygen and methane propellant. This is much riskier than the cryo proof in the sense that if a tank failure were to occur or a fire to accidentally start, 1000+ tons of highly-pressurized propellant could easily create a massive explosion and fireball, destroying or damaging much of the surrounding pad equipment. The WDR could potentially be rolled into another Raptor engine test that would verify its preburner performance.

Pictured on April 4th, one of these three Raptors will likely be installed on Starship SN4 just a day or two from now. (Elon Musk)

To operate, Raptors first take liquid oxygen and liquid methane into separate parts of the engine and rapidly heat them to turn them into high temperature gas. Those preburners then send that hot gas to separate turbopumps that spin up and allow the engines to keep supplying themselves with large quantities of propellant, followed by the process of actually igniting the engine itself with a complex series of blowtorches.

If the preburner and turbopump spin-up test is successful, SpaceX can then move on to the actual static fire. Featuring a single Raptor engine, Starship SN4 will hopefully become the first full-scale rocket to safely operate a flight-grade engine since SpaceX began full-scale tests in November 2019. If successful, that static fire could pave the way for Starship SN4 to perform a Starhopper-style 150m (500 ft) hop test as early as May 2020 – a hop that would be powered by a single Raptor engine according to Musk.

Starship SN5 will reportedly be the first ship to both have a nosecone installed and three Raptor engines installed if SN4 has a very successful few weeks and that new ship is perhaps just 5-10 days from being fully assembled. In short, things are about to get very busy and very exciting at SpaceX’s South Texas Starship factory and launch pad.

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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 Q2 2025 earnings: What Wall Street expects

The company has faced mounting pressure this year, with TSLA stock down 19% year-to-date.

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Credit: Tesla Asia/X

Tesla (NASDAQ:TSLA) is set to release its second-quarter 2025 financial results after markets close on Wednesday, July 23. The company has faced mounting pressure this year, with TSLA stock down about 19% year-to-date. 

What Wall Street expects

As noted in a TipRanks report, Wall Street has remained cautious about the electric vehicle maker due to concerns about the EV segment in general, competition, reduced margins, federal EV regulations, and CEO Elon Musk’s political activities. 

Overall, Wall Street expects Tesla to post earnings per share of $0.39, down 25% from a year ago. Tesla’s revenue is forecasted to fall 13% to $22.19 billion, and analysts also expect the electric vehicle maker to post lower margins this quarter.

Analyst expectations

Tesla delivered approximately 384,120 vehicles in Q2, a 13.5% drop year-over-year, as per Main Street Data. The company also produced over 410,000 vehicles and deployed 9.6 GWh of energy storage products during the quarter. 

Ahead of the earnings call, Cantor Fitzgerald analyst Andres Sheppard reiterated a Buy rating and a $335 per share price target. He also adjusted his Q2 revenue forecast to $21 billion, down from his previous estimate of $24.1 billion. Despite short-term softness, Sheppard maintained his 2025 and 2026 projections, citing confidence in Tesla’s high-margin Robotaxi business model.

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Barclays analyst Dan Levy kept a Hold rating with a $275 price target. He stated that the company faces “increasingly weaker fundamentals,” but he also suggested that Tesla’s Robotaxi story could drive optimism. Levy expects modest gross margin improvement quarter-over-quarter and flagged the full-year EPS estimate drop from $3.20 to $1.84. Delays in launching the affordable Tesla model remain a downside risk, Levy noted.

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Tesla expands FSD Transfer offer to Europe and the Middle East

Tesla’s FSD transfer offer has long been used as a quarterly sales lever in North America.

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Credit: Tesla Europe & Middle East/X

Tesla has extended its Full Self-Driving (FSD) transfer promotion beyond North America, opening the door for owners in Europe and the Middle East to carry over their existing FSD systems to a new vehicle. 

The move comes days after Elon Musk acknowledged a user’s request for FSD transfers in Europe on X, which the CEO called a “fair” ask. Tesla Europe later confirmed the offer via its official X account.

FSD transfers reaching new markets

FSD transfers have been used as a quarterly sales lever in North America, with its most recent availability in April 2025, as noted in a Not a Tesla App report. While this incentive had remained exclusive to the U.S. and Canada, Tesla’s latest announcement marks the first time the program has been rolled out internationally. 

Interestingly enough, the offer hasn’t yet been extended to other FSD-enabled regions like China. This suggests that Tesla may be prioritizing markets where regulatory approval for FSD remains pending. European Tesla owners, after all, have been waiting literal years for FSD to be rolled out into their countries. 

How the program works

The process for FSD transfers is straightforward. Existing Tesla owners with FSD must place a new vehicle order and complete delivery during the active promotion period. During checkout, customers are instructed not to add FSD to the new car. Instead, they must notify a Tesla advisor of their intent to transfer their existing vehicle’s FSD. 

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On delivery day, FSD will be deactivated on the old vehicle and activated on the new one. Customers are not required to trade in or sell their original Tesla that had FSD, though once the license is moved, the old vehicle reverts to just Basic Autopilot features.

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Tesla Q2 2025 vehicle safety report proves FSD makes driving almost 10X safer

Tesla released its most recent vehicle safety data on its official website.

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Credit: @BLKMDL3/X

Tesla has released its most recent vehicle safety report, reiterating the idea that Autopilot and systems like Full Self Driving (FSD) are really the company’s best safety features.

Tesla released its most recent vehicle safety data on its official website. 

Tesla’s Q2 2025 safety statistics

As per the electric vehicle maker’s Q2 2025 report, the company recorded one crash for every 6.69 million miles driven for vehicles that were using Autopilot technology. In comparison, data from the NHTSA and FHWA listed one automobile crash every 702,000 million miles.

“In the 2nd quarter, we recorded one crash for every 6.69 million miles driven in which drivers were using Autopilot technology. For drivers who were not using Autopilot technology, we recorded one crash for every 963,000 miles driven. By comparison, the most recent data available from NHTSA and FHWA (from 2023) shows that in the United States there was an automobile crash approximately every 702,000 miles,” Tesla wrote in its report.

FSD as a safety feature

Elon Musk has always maintained that FSD is the company’s biggest safety feature. This is no exaggeration, as the system allows vehicles to operate vehicles without human intervention. Tesla is currently proving this in Austin, where it operates the pilot program for its dedicated self-driving Robotaxi service. Customers who have used Tesla’s Robotaxi service in Austin have noted that the vehicles operate in a manner that is akin to a confident and cautious driver.

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An underrated advantage of Tesla’s FSD system is the fact that it does not get tired, nor does it ever operate the vehicle while intoxicated. It never gets distracted either. These advantages may seem minor, but they go a long way towards making Teslas the safest vehicles on the road today.

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