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SpaceX’s second flight-proven Starship makes way for next ‘test tank’

From left to right, Starship Mk1's nose section, Starship SN6, Starship SN7, and test tank SN7.1. (NASASpaceflight - Nomadd)

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Four days after the rocket’s hop debut, SpaceX has safely returned its second flight-proven Starship prototype to an assembly building for refurbishment, making way for a new ‘test tank’ at the launch pad.

Known as Starship serial number six (SN6), the ~30m (~100 ft) tall prototype became the second full-scale Starship to take flight on September 3rd, following in SN5’s footsteps to reach a similar ~150m (~500 ft) apogee before gently landing. More or less identical to SN5’s own August 4th hop debut, it marked the second hop of an entirely separate Starship prototype in 30 days – a feat almost certainly unprecedented in the history of large-scale rocket development.

Significant work remains to speed up the post-hop process, which appears to currently amount to some ~48 hours of gradual, uncontrolled detanking and depressurization. Regardless, a bit least than four days after a successful launch and landing, Starship SN6 was rolled back to SpaceX’s Boca Chica, Texas production facilities around 9am CDT, September 7th. Just five hours after that, Starship test tank SN7.1 – the second in a planned series of two – was loaded onto the same transporter and shipped down the road to the launch pad.

SpaceX has returned Starship SN6 to its roost in preparation for a new destructive test tank campaign. (NASASpaceflight – bocachicagal)

Since its first hop, over the last 30 days, SpaceX has inspected and refurbished Starship SN5 to help support what CEO Elon Musk has described as “several short hops to smooth out [the] launch process.” SN6’s success (and the intact launch infrastructure it thus left behind) now means that SN5 will almost certainly be reused in the near future. It’s unclear how many hops will be needed for Starship launch operations to be optimized into a smooth process but 4+ (2 x SN5, 2 x SN6) seems to be a safe bet.

However, SN5’s second hop will have to wait. Up next on SpaceX’s South Texas manifest is the fifth in a series of intentionally destructive tank tests, used to qualify (or disqualify) new Starship designs, manufacturing techniques, and materials. Known as Starship SN7.1, this particular test tank is the second in a series of two meant to determine the capabilities of a new steel alloy.

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The first tank, SN7, was (successfully) tested to destruction on June 23rd and is believed to have reached record pressures before it failed. Perhaps more importantly, an unintentional leak during one of SN7’s first pressure test attempts proved that the new 304L (-ish) steel alloy it was built out of would make certain failure modes far less catastrophic (i.e. a leak instead of a violent rupture).

SN7, June 15th. (NASASpaceflight – bocachicagal
SN7.1, September 4th. (NASASpaceflight – bocachicagal)

SN7 was a single basic test tank: an upper dome, lower dome, and three steel rings. SN7.1 is significantly more complex, adding a skirt section with hold-down clamps at the base and replacing the aft tank dome with a thrust dome and thrust puck (Raptor engine attachment points). SN7 was simply loaded with cryogenic liquid nitrogen and pressurized. SN7.1 – thanks to the addition of a thrust puck and skirt section – will perform similar cryo pressure tests but will also be subject to the simulated thrust of three Raptor engines with a series of hydraulic rams.

As of now, SpaceX has road closures scheduled today and tomorrow (Sept 8th) from 8am to 8pm CDT – tomorrow likely being the earliest opportunity for SN7.1 testing to begin.

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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 Full Self-Driving’s newest behavior is the perfect answer to aggressive cars

According to a recent video, it now appears the suite will automatically pull over if there is a tailgater on your bumper, the most ideal solution for when a driver is riding your bumper.

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Credit: Tesla

Tesla Full Self-Driving appears to have a new behavior that is the perfect answer to aggressive drivers.

According to a recent video, it now appears the suite will automatically pull over if there is a tailgater on your bumper, the most ideal solution for when a driver is riding your bumper.

With FSD’s constantly-changing Speed Profiles, it seems as if this solution could help eliminate the need to tinker with driving modes from the person in the driver’s seat. This tends to be one of my biggest complaints from FSD at times.

A video posted on X shows a Tesla on Full Self-Driving pulling over to the shoulder on windy, wet roads after another car seemed to be following it quite aggressively. The car looks to have automatically sensed that the vehicle behind it was in a bit of a hurry, so FSD determined that pulling over and letting it by was the best idea:

We can see from the clip that there was no human intervention to pull over to the side, as the driver’s hands are stationary and never interfere with the turn signal stalk.

This can be used to override some of the decisions FSD makes, and is a great way to get things back on track if the semi-autonomous functionality tries to do something that is either unneeded or not included in the routing on the in-car Nav.

FSD tends to move over for faster traffic on the interstate when there are multiple lanes. On two-lane highways, it will pass slower cars using the left lane. When faster traffic is behind a Tesla on FSD, the vehicle will move back over to the right lane, the correct behavior in a scenario like this.

Perhaps one of my biggest complaints at times with Full Self-Driving, especially from version to version, is how much tinkering Tesla does with Speed Profiles. One minute, they’re suitable for driving on local roads, the next, they’re either too fast or too slow.

When they are too slow, most of us just shift up into a faster setting, but at times, even that’s not enough, see below:

There are times when it feels like it would be suitable for the car to just pull over and let the vehicle that is traveling behind pass. This, at least up until this point, it appears, was something that required human intervention.

Now, it looks like Tesla is trying to get FSD to a point where it just knows that it should probably get out of the way.

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Tesla Megapack powers $1.1B AI data center project in Brazil

By integrating Tesla’s Megapack systems, the facility will function not only as a major power consumer but also as a grid-supporting asset.

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Credit: Tesla

Tesla’s Megapack battery systems will be deployed as part of a 400MW AI data center campus in Uberlândia, Brazil. The initiative is described as one of Latin America’s largest AI infrastructure projects.

The project is being led by RT-One, which confirmed that the facility will integrate Tesla Megapack battery energy storage systems (BESS) as part of a broader industrial alliance that includes Hitachi Energy, Siemens, ABB, HIMOINSA, and Schneider Electric. The project is backed by more than R$6 billion (approximately $1.1 billion) in private capital.

According to RT-One, the data center is designed to operate on 100% renewable energy while also reinforcing regional grid stability.

“Brazil generates abundant energy, particularly from renewable sources such as solar and wind. However, high renewable penetration can create grid stability challenges,” RT-One President Fernando Palamone noted in a post on LinkedIn. “Managing this imbalance is one of the country’s growing infrastructure priorities.”

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By integrating Tesla’s Megapack systems, the facility will function not only as a major power consumer but also as a grid-supporting asset.

“The facility will be capable of absorbing excess electricity when supply is high and providing stabilization services when the grid requires additional support. This approach enhances resilience, improves reliability, and contributes to a more efficient use of renewable generation,” Palamone added.

The model mirrors approaches used in energy-intensive regions such as California and Texas, where large battery systems help manage fluctuations tied to renewable energy generation.

The RT-One President recently visited Tesla’s Megafactory in Lathrop, California, where Megapacks are produced, as part of establishing the partnership. He thanked the Tesla team, including Marcel Dall Pai, Nicholas Reale, and Sean Jones, for supporting the collaboration in his LinkedIn post.

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Starlink powers Europe’s first satellite-to-phone service with O2 partnership

The service initially supports text messaging along with apps such as WhatsApp, Facebook Messenger, Google Maps and weather tools.

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Credit: SpaceX

Starlink is now powering Europe’s first commercial satellite-to-smartphone service, as Virgin Media O2 launches a space-based mobile data offering across the UK.

The new O2 Satellite service uses Starlink’s low-Earth orbit network to connect regular smartphones in areas without terrestrial coverage, expanding O2’s reach from 89% to 95% of Britain’s landmass.

Under the rollout, compatible Samsung devices automatically connect to Starlink satellites when users move beyond traditional mobile coverage, according to Reuters.

The service initially supports text messaging along with apps such as WhatsApp, Facebook Messenger, Google Maps and weather tools. O2 is pricing the add-on at £3 per month.

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By leveraging Starlink’s satellite infrastructure, O2 can deliver connectivity in remote and rural regions without building additional ground towers. The move represents another step in Starlink’s push beyond fixed broadband and into direct-to-device mobile services.

Virgin Media O2 chief executive Lutz Schuler shared his thoughts about the Starlink partnership. “By launching O2 Satellite, we’ve become the first operator in Europe to launch a space-based mobile data service that, overnight, has brought new mobile coverage to an area around two-thirds the size of Wales for the first time,” he said.

Satellite-based mobile connectivity is gaining traction globally. In the U.S., T-Mobile has launched a similar satellite-to-cell offering. Meanwhile, Vodafone has conducted satellite video call tests through its partnership with AST SpaceMobile last year.

For Starlink, the O2 agreement highlights how its network is increasingly being integrated into national telecom systems, enabling standard smartphones to connect directly to satellites without specialized hardware.

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