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SpaceX set for its most important launch ever as skies, seas threaten delays
SpaceX remains on track for an inaugural NASA astronaut launch that will arguably be the most important single mission in the company’s history, although Florida’s summer weather continues to conspire to delay it.
Heavily dependent on Atlantic Ocean weather conditions, skies (and seas) thankfully appear to be clearing up on the home stretch to Crew Dragon’s Demo-2 astronaut debut. Set to be the first time NASA has launched its own astronauts in nearly a decade and the first time SpaceX (or any private company) has launched humans into orbit, the stakes have never been higher for the 18-year-old Elon Musk venture.
If successful, it will catapult the company into an unprecedented era, proving countless traditional aerospace naysayers wrong and beating the likes of Boeing to the punch — all with a self-built reusable rocket and spacecraft that are dramatically cheaper than their closest competitors. It will be the single most encouraging step SpaceX has taken towards the permanent settlement of the solar system. On the other side of the double-edged sword, if things go south, it’s hard to exaggerate the scale of the setback and road to retribution that would face the pioneering spaceflight company.
Yeah, Atlantic weather review tomorrow morning will determine if we can launch— Elon Musk (@elonmusk) May 27, 2020
For two interconnected reasons, SpaceX’s Crew Dragon astronaut missions are going to be extraordinarily sensitive to weather restrictions come launch day, a fact that has come to partially dominate the tone of Demo-2 preparations over the last few days. First and foremost, NASA’s single highest priority for crewed Commercial Crew Program (CCP) launches is and will continue to be astronaut safety.
If things go according to plan, Crew Dragon’s Demo-2 mission will also be the first time NASA astronauts have splashed down in the ocean since July 1975, when the space agency completed the last launch of an Apollo Command and Service Module (CSM). Recovering crewed spacecraft from the ocean carries numerous challenges and constraints with it, many of which involve specific spacecraft characteristics. For SpaceX and NASA, Crew Dragon will have fairly strict requirements for sea states and weather during astronaut splashdowns. Additionally, thanks to SpaceX’s innovative inclusion of a built-in abort system in the Crew Dragon capsule, the spacecraft will be able to abort at any point during launch, from before liftoff all the way to orbit.
As a direct result of that significant safety improvement, SpaceX and NASA are ironically going to have a more challenging time launching Crew Dragon as dozens of possible abort splashdown locations stretching across the Atlantic Ocean will have to be constantly monitored for weather violations. SpaceX Vice President of Build and Reliability Hans Koenigsmann described the method of weighing those dozens of sites as an extremely complex algorithm, suggesting that unacceptable weather in certain spots might not fully delay a launch opportunity.
Still, adding in the need for SpaceX to attempt to recover Falcon 9 boosters on ocean-based drone ships like Of Course I Still Love You (OCISLY), which carries its own weather restrictions, the company’s astronaut launches are going to be extraordinarily sensitive to environmental factors. As of now, SpaceX’s inaugural astronaut launch remains technically on track to lift off at 4:33 pm EDT (20:33 UTC) on May 27th. The latest forecasts predict a 60% chance of favorable weather on Wednesday, up from 40% around 24 hours ago.
A backup window on May 30th shows a 70% chance of favorable weather, with both days primarily challenged by the likelihood of thunderstorms in and around Cape Canaveral. That forecast, however, doesn’t account for the dozens of locations in the Atlantic Ocean that will also need some level of favorable weather. To quantify the scale of weather-related challenges, Koenigsmann revealed in a prelaunch briefing that the weather component of the flight readiness review (FRR) alone involved a presentation with more than 60 slides. According to Elon Musk, NASA and SpaceX will decide later this morning whether the Atlantic Ocean is calm enough to proceed with Crew Dragon’s historic launch attempt.
SpaceX and NASA will both host livestreams of the Demo-2 mission beginning around noon EDT (16:00 UTC). Stay tuned for updates as we close in on the momentous occasion.
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Nvidia CEO Jensen Huang explains difference between Tesla FSD and Alpamayo
“Tesla’s FSD stack is completely world-class,” the Nvidia CEO said.
NVIDIA CEO Jensen Huang has offered high praise for Tesla’s Full Self-Driving (FSD) system during a Q&A at CES 2026, calling it “world-class” and “state-of-the-art” in design, training, and performance.
More importantly, he also shared some insights about the key differences between FSD and Nvidia’s recently announced Alpamayo system.
Jensen Huang’s praise for Tesla FSD
Nvidia made headlines at CES following its announcement of Alpamayo, which uses artificial intelligence to accelerate the development of autonomous driving solutions. Due to its focus on AI, many started speculating that Alpamayo would be a direct rival to FSD. This was somewhat addressed by Elon Musk, who predicted that “they will find that it’s easy to get to 99% and then super hard to solve the long tail of the distribution.”
During his Q&A, Nvidia CEO Jensen Huang was asked about the difference between FSD and Alpamayo. His response was extensive:
“Tesla’s FSD stack is completely world-class. They’ve been working on it for quite some time. It’s world-class not only in the number of miles it’s accumulated, but in the way it’s designed, the way they do training, data collection, curation, synthetic data generation, and all of their simulation technologies.
“Of course, the latest generation is end-to-end Full Self-Driving—meaning it’s one large model trained end to end. And so… Elon’s AD system is, in every way, 100% state-of-the-art. I’m really quite impressed by the technology. I have it, and I drive it in our house, and it works incredibly well,” the Nvidia CEO said.
Nvidia’s platform approach vs Tesla’s integration
Huang also stated that Nvidia’s Alpamayo system was built around a fundamentally different philosophy from Tesla’s. Rather than developing self-driving cars itself, Nvidia supplies the full autonomous technology stack for other companies to use.
“Nvidia doesn’t build self-driving cars. We build the full stack so others can,” Huang said, explaining that Nvidia provides separate systems for training, simulation, and in-vehicle computing, all supported by shared software.
He added that customers can adopt as much or as little of the platform as they need, noting that Nvidia works across the industry, including with Tesla on training systems and companies like Waymo, XPeng, and Nuro on vehicle computing.
“So our system is really quite pervasive because we’re a technology platform provider. That’s the primary difference. There’s no question in our mind that, of the billion cars on the road today, in another 10 years’ time, hundreds of millions of them will have great autonomous capability. This is likely one of the largest, fastest-growing technology industries over the next decade.”
He also emphasized Nvidia’s open approach, saying the company open-sources its models and helps partners train their own systems. “We’re not a self-driving car company. We’re enabling the autonomous industry,” Huang said.
Elon Musk
Elon Musk confirms xAI’s purchase of five 380 MW natural gas turbines
The deal, which was confirmed by Musk on X, highlights xAI’s effort to aggressively scale its operations.
xAI, Elon Musk’s artificial intelligence startup, has purchased five additional 380 MW natural gas turbines from South Korea’s Doosan Enerbility to power its growing supercomputer clusters.
The deal, which was confirmed by Musk on X, highlights xAI’s effort to aggressively scale its operations.
xAI’s turbine deal details
News of xAI’s new turbines was shared on social media platform X, with user @SemiAnalysis_ stating that the turbines were produced by South Korea’s Doosan Enerbility. As noted in an Asian Business Daily report, Doosan Enerbility announced last October that it signed a contract to supply two 380 MW gas turbines for a major U.S. tech company. Doosan later noted in December that it secured an order for three more 380 MW gas turbines.
As per the X user, the gas turbines would power an additional 600,000+ GB200 NVL72 equivalent size cluster. This should make xAI’s facilities among the largest in the world. In a reply, Elon Musk confirmed that xAI did purchase the turbines. “True,” Musk wrote in a post on X.
xAI’s ambitions
Recent reports have indicated that xAI closed an upsized $20 billion Series E funding round, exceeding the initial $15 billion target to fuel rapid infrastructure scaling and AI product development. The funding, as per the AI startup, “will accelerate our world-leading infrastructure buildout, enable the rapid development and deployment of transformative AI products.”
The company also teased the rollout of its upcoming frontier AI model. “Looking ahead, Grok 5 is currently in training, and we are focused on launching innovative new consumer and enterprise products that harness the power of Grok, Colossus, and 𝕏 to transform how we live, work, and play,” xAI wrote in a post on its website.
Elon Musk
Elon Musk’s xAI closes upsized $20B Series E funding round
xAI announced the investment round in a post on its official website.
xAI has closed an upsized $20 billion Series E funding round, exceeding the initial $15 billion target to fuel rapid infrastructure scaling and AI product development.
xAI announced the investment round in a post on its official website.
A $20 billion Series E round
As noted by the artificial intelligence startup in its post, the Series E funding round attracted a diverse group of investors, including Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group, among others.
Strategic partners NVIDIA and Cisco Investments also continued support for building the world’s largest GPU clusters.
As xAI stated, “This financing will accelerate our world-leading infrastructure buildout, enable the rapid development and deployment of transformative AI products reaching billions of users, and fuel groundbreaking research advancing xAI’s core mission: Understanding the Universe.”
xAI’s core mission
Th Series E funding builds on xAI’s previous rounds, powering Grok advancements and massive compute expansions like the Memphis supercluster. The upsized demand reflects growing recognition of xAI’s potential in frontier AI.
xAI also highlighted several of its breakthroughs in 2025, from the buildout of Colossus I and II, which ended with over 1 million H100 GPU equivalents, and the rollout of the Grok 4 Series, Grok Voice, and Grok Imagine, among others. The company also confirmed that work is already underway to train the flagship large language model’s next iteration, Grok 5.
“Looking ahead, Grok 5 is currently in training, and we are focused on launching innovative new consumer and enterprise products that harness the power of Grok, Colossus, and 𝕏 to transform how we live, work, and play,” xAI wrote.
Nvidia CEO Jensen Huang explains difference between Tesla FSD and Alpamayo
Elon Musk confirms xAI’s purchase of five 380 MW natural gas turbines
