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SpaceX's Dragon spacecraft photobombed in orbit by solar eclipse
On December 26th, SpaceX’s second-to-last Cargo Dragon spacecraft was photobombed in orbit by the shadow cast on Earth by a solar eclipse, likely a little over a week before the vehicle is set to reenter the atmosphere and splash down in the Pacific Ocean.
Cargo Dragon lifted off atop a rare new Falcon 9 booster – B1059 – on December 5th, carrying around 2600 kg (5800 lb) of cargo inside on the flight-proven capsules third launch into Earth orbit. After a quick three-day journey from its parking orbit to the International Space Station (ISS), Dragon was successfully captured by the station’s astronauts with a robotic arm and berthed to the orbital outpost, where the crew quickly unloaded its cargo of food, consumables, science, and equipment.
Shortly after liftoff, Falcon 9 B1059 completed its first successful landing – a bit of a surprise ordeal aboard drone ship Of Course I Still Love You (OCISLY) – and the relatively gentle reentry and trajectory should mean that the booster can be turned around almost immediately for its next launch. B1059 is thus a prime candidate for reuse on a future NASA mission and could very well support Cargo Dragon’s next space station resupply mission (CRS-20) as early as March 2020.
For a number of reasons, the spacecraft’s recent success is a touch bittersweet.
Notably, CRS-19 is the second to last orbital mission scheduled for SpaceX’s original Dragon spacecraft, which debuted in orbit in December 2010, becoming the first commercial spacecraft to successfully reenter and be recovered intact. Less than a year and a half later, Cargo Dragon became the world’s first commercial spacecraft to successful rendezvous and berth with the International Space Station (ISS).
-->The rest, as they say, is history. Five months later, SpaceX launched Cargo Dragon’s first official mission under NASA’s Commercial Resupply Services (CRS) program, known as CRS-1. Aside from a June 2015 launch vehicle failure that prevented Cargo Dragon from reaching orbit on its CRS-7 mission, SpaceX has successfully completed every resupply mission that managed to reach orbit, delivering more than 43 metric tons (95,000 lb) of supplies to the space station and the astronauts aboard it.
There have been several technical challenges over the years but every Cargo Dragon that reached orbit successfully completed its space station resupply mission and was recovered intact from the ocean surface after reentering Earth’s atmosphere. SpaceX has matured and improved almost every aspect of the spacecraft over the nine years it’s been flying, substantially upgrading its PICA-X heat shield, improving navigation sensors, upgrading its reusability, testing Crew Dragon and Starship hardware, and more.
Cargo Dragon has without a doubt been one of SpaceX’s biggest successes, combining with the company’s exceptionally capable and affordable Falcon 9 rocket to enable reliable cargo resupply missions, while also continuing to be the only way that NASA (or anyone alse) can return substantial non-human payloads back to Earth. Thankfully, although the spacecraft’s exceptional track record is set to come to an end after its next launch, the Cargo Dragon lineage will continue to supply the space station in the form of a modified version of Crew Dragon (i.e. Dragon 2).
On December 26th, SpaceX’s CRS-19 Cargo Dragon – attached to the International Space Station (ISS) – was photobombed by the shadow produced on Earth’s surface by an annular solar eclipse. With any luck, the spacecraft’s first upgraded successor will take over and begin orbital resupply launches as early as August 2020, setting SpaceX up for at least another four or so years of Dragon launches.
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News
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.
News
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
Elon Musk reveals what will make Optimus’ ridiculous production targets feasible
Musk recent post suggests that Tesla has a plan to attain Optimus’ production goals.
Elon Musk subtly teased Tesla’s strategy to achieve Optimus’ insane production volume targets. The CEO has shared his predictions about Optimus’ volume, and they are so ambitious that one would mistake them for science fiction.
Musk’s recent post on X, however, suggests that Tesla has a plan to attain Optimus’ production goals.
The highest volume product
Elon Musk has been pretty clear about the idea of Optimus being Tesla’s highest-volume product. 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-per-year line at the Fremont Factory.
Following this, Musk stated that Giga Texas will receive a 10 million-per-year unit Optimus line. But even at this level, the Optimus ramp is just beginning, as the production of the humanoid robot will only accelerate from there. At some point, the CEO stated that a Mars location could even have a 100 million-unit-per-year production line, resulting in up to a billion Optimus robots being produced per year.
Self-replication is key
During the weekend, Musk posted a short message that hinted at Tesla’s Optimus strategy. “Optimus will be the Von Neumann probe,” the CEO wrote in his post. This short comment suggests that Tesla will not be relying on traditional production systems to make Optimus. The company probably won’t even hire humans to produce the humanoid robot at one point. Instead, Optimus robots could simply produce other Optimus robots, allowing them to self-replicate.
-->The Von Neumann is a hypothetical self-replicating spacecraft proposed by the mathematician and physicist John von Neumann in the 1940s–1950s. The hypothetical machine in the concept would be able to travel to a new star system or location, land, mine, and extract raw materials from planets, asteroids, and moons as needed, use those materials to manufacture copies of itself, and launch the new copies toward other star systems.
If Optimus could pull off this ambitious target, the humanoid robot would indeed be the highest volume product ever created. It could, as Musk predicted, really change the world.
Tesla is improving Giga Berlin’s free “Giga Train” service for employees
Tesla Model 3 and Model Y dominate China’s real-world efficiency tests
