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NASA is training SpaceX's first Crew Dragon astronauts for a much longer mission in space
NASA has revealed that the astronauts assigned to SpaceX’s Crew Dragon astronaut launch debut are training for a space station mission many times longer than initially planned.
Scheduled to deliver two NASA astronauts to and from the International Space Station (ISS) no earlier than (NET) late-April or May 2020, Crew Dragon’s Demo-2 mission will be the first crewed launch in SpaceX’s 18-year history. As previously noted on Teslarati (and by NASA itself, briefly), Demo-2 will also mark the first time in history that a privately-built spacecraft attempts to launch humans into orbit.
Still, NASA has funded the development of Crew Dragon (and competitor Boeing’s Starliner) not to achieve firsts but to restore the United States’ ability to launch its own astronauts to the ISS. Along those lines, both Crew Dragon (Demo-2) and Starliner’s (CFT) astronaut test flights were nominally designed to last about a week or two before returning NASA’s astronauts to Earth – a full end-to-end test for both extraordinarily complex vehicles. Two weeks, however, is simply not long enough for those astronauts to practically serve as full members of space station crew, something the ISS generally requires. In response, NASA has been seriously considering extending Boeing’s crewed test flight and has just recently suggested that SpaceX’s own Demo-2 test flight will be similarly upgraded.
About a month ago, SpaceX and NASA talked openly about the possibility of a longer-duration Crew Dragon astronaut launch debut for the first time, potentially extending the amount of time those astronauts are able to spend at the space station from about one week up to 1.5-3 months. This would allow Crew Dragon’s Demo-2 NASA astronauts – Bob Behnken and Doug Hurley – to serve as full members of the ISS crew, expanding the US presence from one to three astronauts.
Ars Technica’s Eric Berger offered some additional details about what exactly NASA might task Behnken and Hurley with on an extended flight earlier this month. Most importantly, the space agency wants the former astronaut – a Space Shuttle and extra-vehicular activity (EVA) veteran – to be (re)trained for spacewalks, allowing him to support an ever-growing to-do list of critical space station repairs and upgrades.
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In effect, extending Crew Dragon’s astronaut flight test will make it almost identical to an “operational” flight where Crew Dragon ferries astronauts to the space station, docks for about six months, and finally returns the same astronauts to Earth at the end of its mission. More importantly, though, NASA’s decision to extend Commercial Crew Program (CCP) test flights – kickstarted with Boeing’s beleaguered Starliner spacecraft – is motivated by a desire to prevent the United States’ presence on the space station from dwindling or even regressing to zero in the near future.
Triggered by years of SpaceX and Boeing delays, NASA will now likely have to purchase more seats on Russian Soyuz launches if it wishes to maintain an full, uninterrupted presence on ISS for the next 12-24 months. After suffering numerous deeply concerning software failures on its first and only orbital launch, Boeing’s Starliner is unlikely to be ready to launch crew anytime soon. At the same time, although SpaceX is closer to its astronaut launch debut than ever before, it’s highly unlikely that Crew Dragon can singlehandedly support a full ISS complement of three NASA astronauts while Starliner works out its issues.
As such, NASA is looking everywhere it can to squeeze a bit more on-orbit time out of existing astronaut missions scheduled in the next year or so, and both Starliner and Crew Dragon’s test flights – barring showstoppers – are excellent opportunities. With NASA Johnson Space Center’s confirmation that both Behnken and Hurley are already deep into the extra training needed for an extended flight, chances are good that both astronauts will be ready for a one- or several-month mission by the time that NASA and SpaceX are ready and willing to launch.
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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
