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SpaceX begins installing ‘Mechazilla’ arms designed to catch Starship rockets

Mechazilla is almost fully assembled. Note the humans at the bottom right for a sense of scale. (NASASpaceflight - bocachicagal)

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After a busy few weeks spent attaching Mechazilla’s two rocket-catching arms to a carriage-like backbone, SpaceX has begun the process of installing the integrated structure on Starbase’s ~450 ft (~135m) tall Starship ‘launch tower’.

Once complete, SpaceX will have created a first-of-its-kind launch tower designed to stack and manipulate Starships and Super Heavy boosters in far worse conditions than cranes can tolerate and catch both rocket stages out of mid-air. Referred to internally as ‘chopsticks,’ the giant pair of steel arms will join a third ‘quick disconnect’ (QD) arm tasked with stabilizing Super Heavy during Starship installation and feeding the reusable upper stage power, comms links, and some 1200 tons (~2.65M lb) of propellant.

Together, they will enable SpaceX to attempt Starship’s first orbital test flights and, perhaps one day, help the next-generation rocket launch in almost any weather and achieve unprecedentedly rapid reusability. But first, SpaceX needs to finish installing and rigging the massive structure.

Beginning on August 29th after less than three months of assembly, SpaceX installed Starship’s QD arm on the launch tower. About a month later, the QD arm was mostly finished off with the installation of a claw-like grabber meant to stabilize Super Heavy and is now only missing its namesake quick-disconnect (an actuating device that will connect Starship to the pad and rapidly disconnect at liftoff). Assembly of the last three major components of Mechazilla – a carriage-like structure and two giant arms – began in July and, much like the tower’s QD arm, wrapped up about three months later.

On October 6th, SpaceX began combining those three main parts by flipping the carriage – a bit like a spine and ribcage with ‘skates’ that attach to rails on the launch tower’s legs – vertical and staging it on a temporary support structure. Both ‘chopsticks’ were then flipped into the correct orientation and moved into position with separate cranes for installation on the carriage/backbone. From start to finish, that process took around 9-10 days and culminated with the installation of two giant cylindrical pins with built-in bearings on October 14th and 15th. By the 17th, both cranes had detached from the assembled Mechazilla arms and carriage were, leaving it precisely balanced against the support structure and more or less freestanding.

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One of at least two human-sized pins that connect both catch arms to their carriage; Oct 14th. (NASASpaceflight)
The arm and carriage assembly was more or less freestanding by October 17th. (NASASpaceflight – bocachicagal)

Just a few days later, after a last-second attempt on October 19th was called off as night fell, SpaceX tried again on the 20th and completed the first step of installing Mechazilla’s catch arms on the launch tower without apparent issue. Likely weighing several hundred tons, Starbase’s largest crane lifted the massive structure up and over an adjacent launch mount and then carefully inched it closer to the tower. Prior to the lift, SpaceX technicians staged 12 ‘skates’ on three of the tower’s four legs – two upper and two lower skates per leg.

Once the carriage was in the right position, workers were able to wrap its upper arms around the tower and began connecting the carriage to those skates with several more large pins. It’s unclear how much progress was made in the hours after the lift but it appears that the carriage has been attached to maybe four or five of six upper skates. Work continued well after nightfall, meaning that it will likely only take a few days to complete all 12 connections. However, even after all skates are installed, the carriage, arms, and skates will still be hanging by crane or winch.

To truly install the structure on the tower, SpaceX will have to finish installing and rigging thousands of feet of steel cable that – via a complex system of pulleys – will connect to powered ‘drawworks’ that will support the carriage and catch arms and lift the assembly up and down the tower like an elevator car. The catch arms and carriage will also need to be mated with a giant ‘cable carrier’ (already staged on the tower) that will connect the structure to ground and control systems.

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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xAI’s Grok 3 partners with Oracle Cloud for corporate AI innovation  

Elon Musk’s xAI partners with Oracle to deliver Grok 3 to enterprise users via OCI. The move boosts Grok’s reach.

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Credit: Elon Musk | X

xAI’s Grok 3 is partnering with Oracle Cloud to deliver its advanced AI model to corporate customers.

Oracle announced its collaboration with xAI earlier this week. The partnership leverages Oracle’s robust infrastructure to offer xAI’s Grok 3, positioning it as a transformative tool for business applications.

“Today, we announced xAI has selected Oracle to offer xAI’s Grok models via OCI Generative AI service for a wide range of use cases and will use OCI’s leading AI infrastructure to train and run inferencing for its next-generation Grok models,” said Clay Magouyrk, Executive Vice President at Oracle Cloud Infrastructure, via LinkedIn.

Oracle’s cost-effective AI capabilities will support xAI’s demanding workloads, enabling faster processing for enterprise users.

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Oracle’s Karan Batta told Reuters: “Our goal here is to make sure that we can provide a portfolio of models – we don’t have our own.” Oracle will host Grok 3 alongside models from Meta, Mistral, and Cohere, ensuring corporate data remains secure within existing Oracle protections.

Oracle’s strategy focuses on integrating popular AI models into corporate software, and xAI’s Grok 3 enhances this portfolio. The collaboration expands Grok’s reach to businesses seeking secure, high-performance AI solutions for diverse use cases.

Elon Musk’s xAI launched Grok 3 in February. It competes with models from DeepSeek and OpenAI. Grok 3 is free for all X users, but features are limited. X offers Premium and Premium+ subscribers access to Grok 3’s advanced capabilities like DeepResearch and Think modes. Users who are not paid subscribers have access to Grok 3’s basic features.

Elon Musk’s companies have a longstanding relationship with Oracle. In 2018, Tesla appointed Oracle founder Larry Ellison to its board, a move Wedbush analyst Daniel Ives called a “home run appointment.”

In 2023, Ellison–who is no longer on Tesla’s board but still close with Musk–revealed plans for a Tesla Cybertruck police car.

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“Our next-generation police car is coming out very soon,” Ellison said at the 2023 Oracle CloudWorld conference in Las Vegas. “It’s my favorite police car. It’s my favorite car, actually. It’s Elon’s favorite car.”

Grok 3’s integration into Oracle Cloud strengthens xAI’s position in the corporate artificial intelligence market. By combining Oracle’s infrastructure with Grok’s cutting-edge capabilities, this collaboration could redefine enterprise AI adoption, driving innovation across industries.

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Tesla Robotaxis are becoming a common sight on Austin’s public roads

Tesla Robotaxi sightings are becoming much more frequent ahead of its launch planned for this month.

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Credit: @Muzeishen | X

Tesla Robotaxis are becoming a common sight on the public roads of Austin, Texas, as yet another test mule has been spotted near the company’s target launch date.

Just over a week ago, the first public sighting of a driverless Tesla Robotaxi was reported. The vehicle was an updated version of the Tesla Model Y, which will be the initial model used in the public deployment of the Robotaxi platform.

Throughout the past week, sightings have been more common, as people in Austin have been looking for the unique decal Tesla is placing on car doors to recognize the driverless vehicles (After all, Robotaxis are not as easy to recognize as driverless vehicles without the LIDAR unit on the roof like Waymo).

Yet another sighting of a Robotaxi was shared on social media today, just two days before CEO Elon Musk’s proposed launch date of June 22:

It is easy to tell that there is nobody in the driver’s seat of this vehicle. Tesla is using its white interior on this particular mule, making it incredibly simple to recognize that no human is controlling the car.

Whether Tesla will still meet the June 22nd deadline remains to be seen, but it is no secret that the company is prioritizing safety ahead of offering public rides.

Tesla will initially roll out the Robotaxi platform in Austin, but it has already started the regulatory process in other areas, specifically California.

The National Highway Traffic Safety Administration (NHTSA) is also helping to streamline the process for companies developing driverless vehicles by giving exemptions to automakers. It will make things much more efficient, benefiting Tesla and other car companies that have similar plans.

Tesla Robotaxi just got a big benefit from the U.S. government

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Elon Musk teases Tesla Optimus Gen 3 capabilities: ‘So many improvements’

If you thought Optimus Gen 2 was impressive, Tesla might have a surprise for you.

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Credit: Tesla Optimus | X

Elon Musk has teased that huge improvements are coming to Tesla’s Optimus humanoid robot, which is arguably the product that the company is developing with the most potential for everyday use by consumers and valuation increases from a financial perspective.

Optimus is still in the development stages, but Tesla has made great strides in its development over the past several years. It started as a simple idea that was unveiled with a human being in a spandex suit.

Tesla posts Optimus’ most impressive video demonstration yet

Just a few years later, Tesla has developed several humanoid robot prototypes that have made their way to influencers and have lent a helping hand around the company’s manufacturing facilities.

Tesla has already introduced two generations of Optimus, as the most recent release featured a vast number of improvements from the initial version.

The following is a list of things Tesla improved upon with Optimus Gen 2 compared to Gen 1:

  • Tesla introduced a weight reduction of roughly 22 pounds, improving efficiency and agility
  • Optimus Gen 2 had a walking speed that improved by 30 percent over Gen 1
  • Tesla developed more capable hands that had 22 degrees of freedom, double that of Gen 1. This improved object handling
  • Optimus Gen 2 had a 2-degree-of-freedom neck, as Gen 1’s was fixed
  • Tesla integrated actuators and sensors for better performance. This includes things like foot force/torque sensing, articulated toe sections that are close to human foot geometry for better balance and movement
  • Optimus Gen 2 has 28 degrees of overall freedom, improving flexibility from the first generation
  • Tesla’s Optimus Gen 2 can do more than Gen 1, and has shown improved motor control and precision, doing things like squats, yoga poses, dancing, and even poaching an egg

These changes essentially brought Tesla closer to what will be the Optimus version that makes it to production. The company has plans to start production for the public in 2026, but some units will be manufactured for internal use within its factories as soon as this year. Tesla has said it could scale to 100,000 units or more by next year.

Musk also revealed to Teslarati recently that the company is in the process of building the production line that will bring manufacturing rates of Optimus to that level.

However, there is another design of Optimus coming, and Musk says it will feature “so many improvements”:

Tesla has said that Optimus will have the capability to perform tedious and time-consuming tasks like folding laundry, babysitting, cooking, walking the dog, and plenty of other things. However, it will be super impressive to see it do things that require true coordination, like threading a needle, for example.

Musk did not hint toward any specific developments that Tesla will aim for with Optimus Gen 3, but the sky is the limit, especially as it will be performing some manufacturing tasks across its factories.

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