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SpaceX wins Sentinel 6B radar satellite launch contract
SpaceX has won a contract to launch the joint US-European Sentinel 6B radar satellite as early as November 2025.
Five years ago, NASA also chose SpaceX to launch Sentinel 6A, the first of two identical satellites designed to use radar altimeters to determine global sea levels more accurately than ever before. In October 2017, just half a year after SpaceX’s first Falcon 9 rocket booster reuse and well before the cost savings that followed were fully factored in, NASA awarded SpaceX $94 million to launch the 1.1-ton (~2500 lb) to a relatively low 1300-kilometer (~810 mi) orbit.
Five years and two months later, NASA has awarded SpaceX $97 million to launch a virtually identical satellite to the same orbit, from the same launch pad, with the same rocket. SpaceX, however, is far from the same company it was in 2017, and has effectively mastered Falcon booster and payload fairing reuse in the half-decade since.
The update that's rolling out to the fleet makes full use of the front and rear steering travel to minimize turning circle. In this case a reduction of 1.6 feet just over the air— Wes (@wmorrill3) April 16, 2024
Beginning in March 2017, SpaceX has reused Falcon boosters on 130 launches, including sensitive US military missions and even NASA astronaut launches. SpaceX has launched almost 70 internal Starlink missions (carrying more than 3600 SpaceX-built satellites) without bankrupting the company. CEO Elon Musk has stated that the marginal cost of a barebones Falcon 9 launch is just $15 million, while another executive once pegged the total cost of a Falcon 9 launch with flight-proven hardware at $28 million.
Perhaps most significantly, SpaceX won a contract in 2019 to launch NASA’s tiny IXPE X-ray telescope on Falcon 9 for only $50 million. SpaceX completed the mission in December 2021, launching the 330-kilogram (~730 lb) spacecraft into a roughly 600-kilometer (~370 mi) orbit. IXPE was initially expected to launch on Aerojet Rocketdyne’s troubled air-launched Pegasus XL rocket, which last launched a small NASA spacecraft for about $55 million.
Writ large, that may be the best explanation for why SpaceX and its executives – both of which have relentlessly reiterated that the company’s purpose is to radically reduce the cost of orbital launches – don’t feel pressure to translate those major cost decreases into major price cuts. Put simply, despite the fact that SpaceX has openly discussed its intentions for more than a decade, there isn’t a rocket on Earth that can beat Falcon 9’s combination of performance, cadence, reliability, and affordability.
In lieu of even a hint of competitive pressure from the rest of the industry, particularly for contracts limited to US industry, SpaceX appears to have decided that the profits from charging as much as possible outweigh the cynicism those actions could convey. To SpaceX’s credit, the reality is also more gray than some of the limited data might imply. Over the last three years, SpaceX’s prices for smallsat rideshare customers have repeatedly decreased and become more flexible. Additionally, accounting for five years of inflation, SpaceX’s $94 million Sentinel 6A contract would be worth about $114 million today, meaning that its $97 million Sentinel 6B launch contract technically represents a modest 15% discount.
It’s also likely that SpaceX’s main competitors, ULA and Arianespace, would have charged tens of millions of dollars more to launch Sentinel 6A or 6B on their current or next-generation rockets. But their existing rockets have no spare capacity for new contracts and their new Vulcan and Ariane 6 rockets have yet to fly, leaving SpaceX without any real competition.
For better or worse, it appears that Falcon 9 rideshare customers and SpaceX’s own Starlink constellation are the only major beneficiaries of Falcon 9’s extraordinary newfound affordability. With potential competitors like Rocket Lab’s Neutron, Relativity’s Terran-R, Blue Origin’s New Glenn, and ULA’s semi-reusable Vulcan variant all years from market entrance, that’s unlikely to change until the mid-to-late 2020s. Until then, even though SpaceX’s pricing is unlikely to revolutionize others’ access to space, Falcon 9 will remain an exceptionally affordable and available option for all launch customers – including NASA and ESA.
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Elon Musk’s Grokipedia surges to 5.6M articles, almost 79% of English Wikipedia
The explosive growth marks a major milestone for the AI-powered online encyclopedia, which was launched by Elon Musk’s xAI just months ago.
Elon Musk’s Grokipedia has grown to an impressive 5,615,201 articles as of today, closing in on 79% of the English Wikipedia’s current total of 7,119,376 articles.
The explosive growth marks a major milestone for the AI-powered online encyclopedia, which was launched by Elon Musk’s xAI just months ago. Needless to say, it would only be a matter of time before Grokipedia exceeds English Wikipedia in sheer volume.
Grokipedia’s rapid growth
xAI’s vision for Grokipedia emphasizes neutrality, while Grok’s reasoning capabilities allow for fast drafting and fact-checking. When Elon Musk announced the initiative in late September 2025, he noted that Grokipedia would be an improvement to Wikipedia because it would be designed to avoid bias.
At the time, Musk noted that Grokipedia “is a necessary step towards the xAI goal of understanding the Universe.”
Grokipedia was launched in late October, and while xAI was careful to list it only as Version 0.1 at the time, the online encyclopedia immediately earned praise. Wikipedia co-founder Larry Sanger highlighted the project’s innovative approach, noting how it leverages AI to fill knowledge gaps and enable rapid updates. Netizens also observed how Grokipedia tends to present articles in a more objective manner compared to Wikipedia, which is edited by humans.
Elon Musk’s ambitious plans
With 5,615,201 total articles, Grokipedia has now grown to almost 79% of English Wikipedia’s article base. This is incredibly quick, though Grokipedia remains text-only for now. xAI, for its part, has now updated the online encyclopedia’s iteration to v0.2.
Elon Musk has shared bold ideas for Grokipedia, including sending a record of the entire knowledge base to space as part of xAI’s mission to preserve and expand human understanding. At some point, Musk stated that Grokipedia will be renamed to Encyclopedia Galactica, and it will be sent to the cosmos.
“When Grokipedia is good enough (long way to go), we will change the name to Encyclopedia Galactica. It will be an open source distillation of all knowledge, including audio, images and video. Join xAI to help build the sci-fi version of the Library of Alexandria!” Musk wrote, adding in a later post that “Copies will be etched in stone and sent to the Moon, Mars and beyond. This time, it will not be lost.”
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Tesla Model 3 becomes Netherlands’ best-selling used EV in 2025
More than one in ten second-hand electric cars sold in the country last year was a Tesla Model 3.
The Tesla Model 3 became the most popular used electric car in the Netherlands in 2025, cementing its dominance well beyond the country’s new-car market.
After years at the top of Dutch EV sales charts, the Model 3 now leads the country’s second-hand EV market by a wide margin, as record used-car purchases pushed electric vehicles further into the mainstream.
Model 3 takes a commanding lead
The Netherlands recorded more than 2.1 million used car sales last year, the highest level on record. Of those, roughly 4.8%, or about 102,000 vehicles, were electric. Within that growing segment, the Tesla Model 3 stood far ahead of its competitors.
In 2025 alone, 11,338 used Model 3s changed hands, giving the car an 11.1% share of the country’s entire used EV market. That means more than one in ten second-hand electric cars sold in the country last year was a Tesla Model 3, Auto Week Netherlands reported. The scale of its lead is striking: the gap between the Model 3 and the second-place finisher, the Volkswagen ID3, is more than 6,700 vehicles.
Rivals trail as residual values shape rankings
The Volkswagen ID.3 ranked a distant second, with 4,595 used units sold and a 4.5% market share. Close behind was the Audi e-tron, which placed third with 4,236 registrations. As noted by Auto Week Netherlands, relatively low residual values likely boosted the e-tron’s appeal in the used market, despite its higher original price.
Other strong performers included the Kia Niro, the Tesla Model Y, and the Hyundai Kona, highlighting continued demand for compact and midsize electric vehicles with proven range and reliability. No other model, however, came close to matching the Model 3’s scale or market presence.
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Tesla Model Y Standard Long Range RWD launches in Europe
The update was announced by Tesla Europe & Middle East in a post on its official social media account on X.
Tesla has expanded the Model Y lineup in Europe with the introduction of the Standard Long Range RWD variant, which offers an impressive 657 km of WLTP range.
The update was announced by Tesla Europe & Middle East in a post on its official social media account on X.
Model Y Standard Long Range RWD Details
Tesla Europe & Middle East highlighted some of the Model Y Standard Long Range RWD’s most notable specs, from its 657 km of WLTP range to its 2,118 liters of cargo volume. More importantly, Tesla also noted that the newly released variant only consumes 12.7 kWh per 100 km, making it the most efficient Model Y to date.
The Model Y Standard provides a lower entry point for consumers who wish to enter the Tesla ecosystem at the lowest possible price. While the Model 3 Standard is still more affordable, some consumers might prefer the Model Y Standard due to its larger size and crossover form factor. The fact that the Model Y Standard is equipped with Tesla’s AI4 computer also makes it ready for FSD’s eventual rollout to the region.
Top Gear’s Model Y Standard review
Top Gear‘s recent review of the Tesla Model Y Standard highlighted some of the vehicle’s most notable features, such as its impressive real-world range, stellar infotainment system, and spacious interior. As per the publication, the Model Y Standard still retains a lot of what makes Tesla’s vehicles well-rounded, even if it’s been equipped with a simplified interior.
Top Gear compared the Model Y Standard to its rivals in the same segment. “The introduction of the Standard trim brings the Model Y in line with the entry price of most of its closest competition. In fact, it’s actually cheaper than a Peugeot e-3008 and costs £5k less than an entry-level Audi Q4 e-tron. It also makes the Ford Mustang Mach-E look a little short with its higher entry price and worse range,” the publication wrote.
Elon Musk’s Grokipedia surges to 5.6M articles, almost 79% of English Wikipedia
Tesla Model 3 becomes Netherlands’ best-selling used EV in 2025
