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Relativity Space’s first 3D-printed rocket arrives at launch pad
Relativity Space has shipped both stages of its first 3D-printed Terran-1 rocket to a launch pad it recently finished constructing at Florida’s Cape Canaveral Space Force Station (CCSFS), leaving the startup just a few steps away from its first orbital launch attempt.
As Relativity CEO Tim Ellis himself noted, the company is about two years behind its initial goal of a 2020 launch debut, but it’s far from alone in that regard. Virtually all of its most direct competitors are in similar boats. Out of sheer coincidence, startups ABL Space and Firefly Space are working towards orbital launch attempts of their similarly sized RS1 and Alpha rockets – ABL for the first time and Firefly for the second time – as early as summer 2022. Now, so is Relativity.
Almost simultaneously, all three companies have announced that both stages of their Terran-1, RS1, and Alpha rockets have arrived at their respective launch sites in Florida, Alaska, and California. Firefly, who has already successfully static fired Alpha’s first and second stages, is undoubtedly in the lead, but ABL Space and Relativity are neck and neck for second.
Both of the latter startups have successfully qualified the smaller, less powerful upper stages of their RS1 and Terran-1 rockets. Both intend to conduct final booster qualification testing – including the first all-engine, full-power static fires – at their launch sites. ABL has a bit of a leg up over Relativity, as it delivered its RS1 booster to its Kodiak, Alaska launch pad months ago. Still, Relativity appears to be on a roll and delivered both stages of its unique 3D-printed Terran-1 rocket to its Cape Canaveral launch site just a few weeks apart in May and June 2022. ABL Space also suffered a major failure during its first attempted upper stage qualification, though the company rapidly recovered. At least publicly, Relativity has experienced no major stage failures while developing Terran-1.
Alpha, RS1, and Terran-1 are all designed to launch roughly 1.2-1.35 tons (2600-3000 lb) to low Earth orbit. All three are roughly the same size and designed to be expended after every launch. Terran-1 and RS1 are designed to launch up to 1.25 and 1.35 tons for $12 million, while Alpha is a bit more expensive at $15 million for 1.17 tons. RS1 is a largely traditional welded-aluminum rocket not unlike SpaceX’s Falcon 1, but with nine smaller booster engines instead of Falcon 1’s one. Alpha is almost entirely built out of carbon fiber composites and is powered by four slightly larger main engines.
Terran-1 has nine 3D-printed booster engines and is also made mostly of aluminum. However, Relativity’s claim to fame is 3D printing, and it says that even its very first Terran-1 rocket is 85% 3D-printed by mass and is the largest single 3D-printed object ever built. Terran-1 reportedly weighs around 9.3 tons (20,500 lb) empty.
-->If Terran-1’s booster qualification testing goes as smoothly as it did for the rocket’s upper stage, Relativity could be ready for its first orbital launch attempt as early as summer (Q3) 2022, just in time to join Firefly (July) and ABL (August). Relativity Space’s ultimate goal? 3D-print similar rockets on Mars.
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Elon Musk makes a key Tesla Optimus detail official
“Since we are naming the singular, we will also name the plural, so Optimi it is,” Musk wrote on X.
Tesla CEO Elon Musk just made a key detail about Optimus official. In a post on X, the CEO clarified some key wording about Optimus, which should help the media and the public become more familiar with the humanoid robot.
Elon Musk makes Optimus’ plural term official
Elon Musk posted a number of Optimus-related posts on X this weekend. On Saturday, he stated that Optimus would be the Von Neumann probe, a machine that could eventually be capable of replicating itself. This capability, it seems, would be the key to Tesla achieving Elon Musk’s ambitious Optimus production targets.
Amidst the conversations about Optimus on X, a user of the social media platform asked the CEO what the plural term for the humanoid robot will be. As per Musk, Tesla will be setting the plural term for Optimus since the company also decided on the robot’s singular term. “Since we are naming the singular, we will also name the plural, so Optimi it is,” Musk wrote in his reply on X.
This makes it official. For media outlets such as Teslarati, numerous Optimus bots are now called Optimi. It rolls off the tongue pretty well, too.
Optimi will be a common sight worldwide
While Musk’s comment may seem pretty mundane to some, it is actually very important. Optimus is intended to be Tesla’s highest volume product, with the CEO estimating that the humanoid robot could eventually see annual production rates in the hundreds of millions, perhaps even more. Since Optimi will be a very common sight worldwide, it is good that people can now get used to terms describing the humanoid robot.
-->During the Tesla 2025 Annual Shareholder Meeting, Musk stated that the humanoid robot will see “the fastest production ramp of any product of any large complex manufactured product ever,” starting with a one-million-Optimi-per-year production line at the Fremont Factory. Giga Texas would get an even bigger Optimus production line, which should be capable of producing tens of millions of Optimi per year.
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Tesla is improving Giga Berlin’s free “Giga Train” service for employees
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
Tesla will expand its factory shuttle service in Germany beginning January 4, adding direct rail trips from Berlin Ostbahnhof to Giga Berlin-Brandenburg in Grünheide.
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
New shuttle route
As noted in a report from rbb24, the updated service, which will start January 4, will run between the Berlin Ostbahnhof East Station and the Erkner Station at the Gigafactory Berlin complex. Tesla stated that the timetable mirrors shift changes for the facility’s employees, and similar to before, the service will be completely free. The train will offer six direct trips per day as well.
“The service includes six daily trips, which also cover our shift times. The trains will run between Berlin Ostbahnhof (with a stop at Ostkreuz) and Erkner station to the Gigafactory,” Tesla Germany stated.
Even with construction continuing at Fangschleuse and Köpenick stations, the company said the route has been optimized to maintain a predictable 35-minute travel time. The update follows earlier phases of Tesla’s “Giga Train” program, which initially connected Erkner to the factory grounds before expanding to Berlin-Lichtenberg.
-->Tesla pushes for majority rail commuting
Tesla began production at Grünheide in March 2022, and the factory’s workforce has since grown to around 11,500 employees, with an estimated 60% commuting from Berlin. The facility produces the Model Y, Tesla’s best-selling vehicle, for both Germany and other territories.
The company has repeatedly emphasized its goal of having more than half its staff use public transportation rather than cars, positioning the shuttle as a key part of that initiative. In keeping with the factory’s sustainability focus, Tesla continues to allow even non-employees to ride the shuttle free of charge, making it a broader mobility option for the area.
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Tesla Model 3 and Model Y dominate China’s real-world efficiency tests
The Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km.
Tesla’s Model 3 and Model Y once again led the field in a new real-world energy-consumption test conducted by China’s Autohome, outperforming numerous rival electric vehicles in controlled conditions.
The results, which placed both Teslas in the top two spots, prompted Xiaomi CEO Lei Jun to acknowledge Tesla’s efficiency advantage while noting that his company’s vehicles will continue refining its own models to close the gap.
Tesla secures top efficiency results
Autohome’s evaluation placed all vehicles under identical conditions, such as a full 375-kg load, cabin temperature fixed at 24°C on automatic climate control, and a steady cruising speed of 120 km/h. In this environment, the Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km, as noted in a Sina News report.
These figures positioned Tesla’s vehicles firmly at the top of the ranking and highlighted their continued leadership in long-range efficiency. The test also highlighted how drivetrain optimization, software management, and aerodynamic profiles remain key differentiators in high-speed, cold-weather scenarios where many electric cars struggle to maintain low consumption.
Xiaomi’s Lei Jun pledges to continue learning from Tesla
Following the results, Xiaomi CEO Lei Jun noted that the Xiaomi SU7 actually performed well overall but naturally consumed more energy due to its larger C-segment footprint and higher specification. He reiterated that factors such as size and weight contributed to the difference in real-world consumption compared to Tesla. Still, the executive noted that Xiaomi will continue to learn from the veteran EV maker.
“The Xiaomi SU7’s energy consumption performance is also very good; you can take a closer look. The fact that its test results are weaker than Tesla’s is partly due to objective reasons: the Xiaomi SU7 is a C-segment car, larger and with higher specifications, making it heavier and naturally increasing energy consumption. Of course, we will continue to learn from Tesla and further optimize its energy consumption performance!” Lei Jun wrote in a post on Weibo.
-->Lei Jun has repeatedly described Tesla as the global benchmark for EV efficiency, previously stating that Xiaomi may require three to five years to match its leadership. He has also been very supportive of FSD, even testing the system in the United States.
Elon Musk makes a key Tesla Optimus detail official
Tesla is improving Giga Berlin’s free “Giga Train” service for employees
