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SpaceX test-fires Falcon 9 for expendable Block 5 launch as bad weather threatens delays

Falcon 9 B1047.1 prepares for its second launch from Pad 39A in November 2018. (Tom Cross)

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SpaceX has fired up twice-flown Falcon 9 booster B1047 ahead of Block 5’s second expendable launch ever, but the company avoided its usual confirmation that a ‘quick look’ data analysis shows the vehicle as ready for launch.

Aside from the unusual phrasing of SpaceX’s static fire confirmation, stating instead that the company “is assessing data”, the weather forecast for the launch of AMOS-17 is looking about as dreary as it was during SpaceX’s most recent July 25th launch, CRS-18. CRS-18 was scrubbed once before the instantaneous launch window luckily coincided with an only partially metaphorical gap in the clouds. However, scheduled to lift off no earlier than 6:52 pm EDT (22:52 UTC), August 3rd, the AMOS-17 commsat launch features a comparatively luxurious ~90-minute window, giving SpaceX a much better shot at ‘threading the needle’.

Still, as indicated in the tweet above, the combination of a horrible weather forecast (70% chance of weather violation on Aug. 3, 60% on Aug. 4), uncertainty surrounding Falcon 9’s static fire test results, and the gravity of this particular launch all suggest that delays are likely.

With most things in rocketry, the adage, “Better late than never!” almost invariably holds true when dealing with late-stage launch vehicle processing, and SpaceX will be taking that to the extreme with this launch for reasons that will become clear. If SpaceX can avoid the growing probability of minor delays, generally an annoying non-issue more than anything else, customer Spacecom will certainly be appreciative, but the most important thing is ensuring the safe orbital delivery of AMOS-17.

Weighing roughly 6500 kg (14,300 lb) fully-fueled, AMOS-17 is a relatively large geostationary communications satellite built by Boeing and, practically speaking, is meant to replace Amos-6, an Israeli-built satellite that was destroyed in September 2016 during a catastrophic Falcon 9 failure. Spacecom effectively took the insurance funds it received from the loss of Amos-6, purchased AMOS-17 via Boeing, and then chose a contract option that gave the company a free Falcon 9 launch instead of taking a cash payout of $50M.

Be it financial necessity or a genuine decision to trust SpaceX that led Spacecom to manifest its replacement satellite on Falcon 9, a second failure and loss of payload (AMOS-17) during this launch would be a spectacular embarrassment and a major wound to SpaceX’s growing reputation as a reliable launch provider. If there is any launch in particular that SpaceX explicitly wants to avoid a failure on, it’s probably AMOS-17.

Perhaps to this end, SpaceX has actually chosen – presumably at the request or suggestion of Spacecom – to expend a Falcon 9 Block 5 booster in support of the AMOS-17 launch. Confirmed by SpaceX to be B1047.2, the company will preclude a landing attempt and instead sacrifice a booster that might otherwise fly a dozen more launches to give Spacecom a larger safety margin and help AMOS-17 start serving customers as quickly as possible. The sooner AMOS-17 can reach its final geostationary orbit (GEO), the sooner Spacecom can begin generating revenue from the satellite.

Sans grid fins or landing legs, Falcon 9 B1047.2 and a fresh upper stage arrived at SpaceX’s LC-40 pad around July 28th. (Spacecom/SpaceX)

Finally, SpaceX fairing recovery vessel GO Ms. Tree (formerly Mr. Steven) has just departed Port Canaveral (c. August 1st) and is headed nearly 1000 km (600 mi) east into the Atlantic Ocean for what could be the ship’s second successful fairing catch ever. Stay tuned as SpaceX provides updates and we near AMOS-17’s tentative launch date.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Grok coming to Tesla vehicles next week “at the latest:” Elon Musk

Grok’s rollout to Tesla vehicles is expected to begin next week at the latest.

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Credit: Tesla China

Elon Musk announced on Thursday that Grok, the large language model developed by his startup xAI, will soon be available in Tesla vehicles. Grok’s rollout to Tesla vehicles is expected to begin next week at the latest, further deepening the ties between the two Elon Musk-led companies.

Tesla–xAI synergy

Musk confirmed the news on X shortly after livestreaming the release of Grok 4, xAI’s latest large language model. “Grok is coming to Tesla vehicles very soon. Next week at the latest,” Musk wrote in a post on social media platform X.

During the livestream, Musk and several members of the xAI team highlighted several upgrades to Grok 4’s voice capabilities and performance metrics, positioning the LLM as competitive with top-tier models from OpenAI and Google.

The in-vehicle integration of Grok marks a new chapter in Tesla’s AI development. While Tesla has long relied on in-house systems for autonomous driving and energy optimization, Grok’s integration would introduce conversational AI directly into its vehicles’ user experience. This integration could potentially improve customer interaction inside Tesla vehicles.

xAI and Tesla’s collaborative footprint

Grok’s upcoming rollout to Tesla vehicles adds to a growing business relationship between Tesla and xAI. Earlier this year, Tesla disclosed that it generated $198.3 million in revenue from commercial, consulting, and support agreements with xAI, as noted in a report from Bloomberg News. A large portion of that amount, however, came from the sale of Megapack energy storage systems to the artificial intelligence startup.

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In July 2023, Musk polled X users about whether Tesla should invest $5 billion in xAI. While no formal investment has been made so far, 68% of poll participants voted yes, and Musk has since stated that the idea would be discussed with Tesla’s board.

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Tesla Robotaxi to expand Austin coverage, Bay Area launch targeted in coming months

Tesla is looking at the San Francisco Bay Area as the next location for its Robotaxi service.

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Credit: @AdanGuajardo/X

Tesla is preparing to expand its Robotaxi pilot program in Austin, Texas, with the self-driving service set to cover a larger portion of the city this weekend. The CEO shared the update in a post on social media platform X, where he also noted that the company is currently looking at the San Francisco Bay Area as the location for Tesla’s next Robotaxi pilot.

Tesla’s growing Robotaxi pilot

Tesla’s Robotaxi service first launched in Austin last month as a test program. While the vehicles operate without a human in the driver’s seat, a Tesla employee currently rides in the front passenger seat to monitor vehicle performance. Responses to Tesla’s Robotaxi pilot are quite positive, with some users praising the vehicles for their smooth and comfortable rides.

In a later post on X, Musk also stated that Tesla is in the process of seeking regulatory approval to begin operating robotaxis in the Bay Area, adding that a launch there could happen within “a month or two.” The California expansion would be a notable milestone for Tesla, considering its roots in the state.

Robotaxi is key to Tesla’s long-term growth

Autonomous driving remains central to Tesla’s long-term vision. Musk has consistently framed Robotaxis as a future driver of profitability and growth, particularly as EV sales face headwinds across multiple regions. In a way, the expansion of Tesla’s autonomous fleet is expected to play a critical role in differentiating the company’s offerings in a crowded electric vehicle market.

Tesla has yet to specify when the Robotaxi service will transition out of its testing phase or how it plans to monetize the platform, as the company is only charging a flat fee of $4.20 per ride in its Austin pilot program today. However, its growing geographic footprint suggests the company is steadily progressing toward wider deployment.

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xAI launches Grok 4 with new $300/month SuperGrok Heavy subscription

xAI also introduced SuperGrok Heavy, which is priced at $300 per month.

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Credit: xAI/X

xAI, the artificial intelligence company founded by Elon Musk, has officially launched its latest flagship models, Grok 4 and Grok 4 Heavy. Alongside the release, the company introduced its most premium subscription tier to date, SuperGrok Heavy, which is priced at $300 per month and targeted at power users and developers.

Grok 4 is designed to compete with top-tier AI models like OpenAI’s ChatGPT and Google’s Gemini. As per xAI, Grok 4 demonstrates frontier-level performance across several benchmark evaluations. 

On Humanity’s Last Exam, an extensive test designed to evaluate general knowledge, Grok 4 scored 25.4% without using external tools, outperforming OpenAI’s o3 (high), which scored 21%, and Gemini 2.5 Pro, which scored 21.6%. 

When equipped with tools, Grok 4 Heavy scored 44.4%, making it the top-performing model in that category. For context, Gemini 2.5 Pro with tools scored 26.9%, as noted in a TechCrunch report.

xAI also highlighted Grok 4 Heavy’s “multi-agent” system, which enables multiple instances of the model to solve a problem in parallel and compare answers, similar to a study group. This collaborative approach is intended to improve both reasoning and accuracy in complex tasks.

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The company also shared results from the ARC-AGI-2 benchmark, where Grok (Thinking) achieved new state of the art (SOTA) score on the test with 15.9%. As per Arc Prize in a post on X, this score is “nearly double(s) the previous commercial SOTA and tops the current Kaggle competition SOTA.”

The $300/month SuperGrok Heavy plan grants users early access to Grok 4 Heavy, as well as upcoming product features. Upcoming capabilities that are planned for release in the coming months include an AI coding model in August, a multi-modal agent in September, and a video generation system in October.

Grok 4 and Grok 4 Heavy are available via API as part of xAI’s push to engage developers and enterprise users. The company’s enterprise platform, which launched just two months ago, will also expand via partnerships with cloud hyperscalers to bring Grok models to broader infrastructure environments.

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