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SpaceX assembles Falcon Heavy rocket for first launch in 40 months

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SpaceX has assembled the fourth Falcon Heavy for the rocket’s first launch in 40 months.

A photo shared by SpaceX on October 23rd shows that it has mated Falcon Heavy’s three first stage boosters together while preparing for prelaunch testing. Simultaneously, workers have completed the equally important task of converting 39A’s transporter/erector (T/E), which has been configured for single-core Falcon 9 rockets for over three years.

The transporter/erectors SpaceX use for all Falcon launches are a bit like a mobile backbone and launch tower combined. Their first purpose is to transport horizontal Falcon rockets to and from their integration hangars and launch pads. They’re also tasked with raising Falcon rockets vertical and lowering them back down for transport or worker access. Most importantly, they connect to a pad’s ground systems and distribute propellant, gases, power, and communications to Falcon 9 and Falcon Heavy through multiple umbilicals and quick-disconnect ports.

Falcon Heavy, which can only be launched out of LC-39A, has three times as many boosters as Falcon 9 and necessitates significant modifications to the pad’s T/E when switching between the two. The process is much harder when moving from F9 to FH, and waiting almost three and a half years between Falcon Heavy launches likely hasn’t made the conversion any easier. But on October 23rd, after numerous tests and weeks of work, the Pad 39A T/E picked up the ‘reaction frame’ that attaches to the bottom of Falcon rockets and was brought horizontal.

Thanks to the nature of Falcon Heavy and Pad 39A’s infrastructure, what happens next is more or less guaranteed. During normal Falcon 9 operations, 39A’s integration hangar is large enough for two or three unrelated Falcon boosters to remain while the T/E rolls inside to pick up a full Falcon 9. More importantly, Falcon 9’s booster and upper stage can technically be integrated off to the side and craned onto the T/E when ready. But with Falcon Heavy, which has a first stage akin to three Falcon 9 boosters sitting side by side, there isn’t enough room inside the hangar to integrate the rocket with the T/E inside.

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For Falcon Heavy, the T/E can thus only roll back into the hangar once the rocket’s three boosters and upper stage have been fully assembled and are suspended in mid-air. SpaceX’s October 23rd photo shows that three of the four cranes required for that lift appear to already be in position, further confirming that T/E rollback is imminent. Once the T/E rolls back to the hangar and Falcon Heavy is attached, the rocket will eventually be transported to the pad and brought vertical for wet dress rehearsal (WDR) and static fire testing.

Update: SpaceX began rolling the T/E to Pad 39A’s integration hangar around 1 am EDT, October 24th.

The US Space Force’s USSF-44 payload – a mysterious pair of satellites that are more than two years behind schedule – will almost certainly not be installed on Falcon Heavy during prelaunch testing, so the rocket will need to roll back to the hangar at least one more time after testing to have its payload fairing attached.

Combined, that prelaunch process could easily take a week or more. Multiple sources report that Falcon Heavy is scheduled to launch no earlier than (NET) 9:44 am EDT (13:44 UTC) on Halloween, October 31st. But even if the rocket rolls out today (Oct 24), the odds are stacked against Falcon Heavy sailing through its first integrated prelaunch tests in 40 months, and delays are likely.

Falcon Heavy’s fourth flight should look a lot like its second, which also used all-new Block 5 boosters. (Richard Angle)

For Falcon Heavy’s fourth launch, all three of the rocket’s boosters – B1064, B1065, and B1066 – are new, as are its upper stage and payload fairing. An FCC permit for the launch has confirmed that SpaceX will intentionally expend the rocket’s new center core while its twin side boosters will attempt a near-simultaneous landing back at Cape Canaveral. USSF-44 will be SpaceX’s first attempted launch directly to geostationary orbit (GEO), an exceptionally challenging mission that requires the rocket’s upper stage to coast in space for around 4-6 hours between two major burns.

If successful, Falcon Heavy will insert the USSF-44’s mystery satellites into a circular orbit ~35,600 kilometers (~22,150 mi) above Earth’s surface. At that altitude, orbital velocity matches Earth’s rotation and spacecraft can effectively hover – indefinitely – above their region of choice.

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Falcon Heavy is the most powerful operational rocket in the world. At liftoff, it weighs around 1420 tons (~3.1M lb) and can produce more than 2300 tons (~5.1M lbf) of thrust. In a fully expendable configuration, Falcon Heavy can launch 26.7 tons (59,000 lb) to an elliptical geostationary transfer orbit and 63.8 tons (141,000 lb) to low Earth orbit. SpaceX doesn’t advertise its direct-to-GEO capabilities.

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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Tesla China achieves this year’s second highest domestic sales in June

The figure represents Tesla’s second-best performance in 2025 so far.

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Domestic sales for Tesla China reached 61,484 units in June, marking a sharp recovery from recent months and positioning the company for a stronger finish to the second quarter. The figure represents Tesla’s second-best performance in 2025 so far, trailing only March, when the company delivered 74,127 vehicles domestically.

A strong comeback for Tesla China

According to data from the China Passenger Car Association (CPCA), Tesla sold a total of 71,599 cars wholesale in June 2025. This means that Tesla’s domestic sales last month rose 59.3% compared to May’s 38,588 units and increased 3.75% year-over-year from 59,261 units in June 2024, as noted in a CNEV Post report. 

The rebound ends a two-month streak of year-over-year declines and helped lift Tesla’s Q2 retail total in China to 128,803 units, though that still marks an 11.7% drop from the same period last year. For context, Tesla China sold 263,410 vehicles domestically, down 5.36% year-over-year, in the first six months of 2025.

Tesla’s stronger domestic showing in June came as the company scaled back its export output from Giga Shanghai. The factory exported 10,115 vehicles last month, down 56.2% from May and 13.9% from a year earlier. For the first half of 2025, Tesla China’s total exports reached 101,064 units, down 31.85% compared to the same period in 2024.

Tesla China’s 2025 performance

June saw continued growth across China’s broader new energy vehicle (NEV) market, with retail sales reaching 1.11 million units, up 29.7% year-over-year. Battery electric vehicles (BEVs) accounted for 661,000 of those sales. Tesla’s NEV market share for June was then 5.53%, down from 6.92% a year earlier but an improvement over May’s 3.78%.

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The Model Y continues to be Tesla China’s primary driver of sales, with the vehicle’s wholesale figures reaching 51,253 units in June, up 16.6% from a year ago and nearly 30% from May. Wholesale numbers for the Model Y totaled 214,034 units in the first six months of the year. The Model 3, in comparison, saw wholesale volumes reach 150,440 units in the first six months of the year.

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Elon Musk confirms Grok 4 launch on July 9 with livestream event

The rollout will be accompanied by a livestream at 8 p.m. Pacific Time.

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Credit: xAI/X

Elon Musk has officially confirmed that Grok 4, the latest version of xAI’s large language model, will launch on July 9. The rollout will be accompanied by a livestream at 8 p.m. Pacific Time, hosted on xAI’s official account on X.

xAI goes straight to Grok 4

Back in May, leaks indicated that xAI was getting ready to ship Grok 3.5. Considering Musk’s recent comments, however, it appears that the artificial intelligence startup would be focusing on the large language model’s fourth iteration instead. As noted in a Financial Express report, users on X have sighted references to Grok 4 in the lead up to the update’s launch, such as “grok-4-prod-mimic” and “Grok 4 Code.”

Musk’s Grok 4 announcement comes as AI competition intensifies between major players including OpenAI, Google, and xAI. With Musk’s Colossus supercomputer fully operational in Memphis, xAI appears to be accelerating its AI product roadmap.

Musk pushes Grok toward political neutrality

Grok 4’s launch also follows a recent controversy involving political bias, as noted in a CNN report. Last week, Grok responded to a user on X stating that political violence in the U.S. since 2016 had come more from the political right than the left. The chatbot noted in a later reply that its answer was based on information from sources like Reuters, the Journal of Democracy, and University of Maryland studies. 

Musk stated that Grok’s response was a “major fail.” “Major fail, as this is objectively false. Grok is parroting legacy media. Working on it,” he wrote in a post on X. By the end of June, Musk noted that he was “grinding all night with the xAI team” and that they were making “good progress.” He also stated that the model “Will be called Grok 4. Release just after July 4th. Needs one more big run for a specialized coding model.”

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Tesla opens massive solar Supercharger station in California

The Supercharger opened to customers ahead of Fourth of July weekend, while Tesla continues phase two of construction on the site.

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Credit: Tesla Charging | X

Tesla has officially launched the first several Supercharging posts at a massive station in California, notably including solar canopies and grid-scale batteries to offer completely renewable charging.

Last week, Tesla announced on X that it opened the first 84 Supercharger stalls of a planned 168-stall station in Lost Hills, California. Additionally, the massive Supercharger project features 11MW of solar canopies and 10 Megapack batteries for off-grid charging powered entirely by solar energy.

Tesla completed the first phase of the project just days ahead of the busy Fourth of July holiday weekend, adding that initial construction took just eight months. In addition to the remaining charging stalls, Tesla says it’s building a set of lounge areas, renderings of which can be seen below alongside current photos of the site.

Notably, the site also includes V4 charging posts for the company’s latest available charging speeds, and it’s located near the busy junction between I-5 and Highway 46 in Kern County.

“Thank you [Kern County] and [PG&E] for collaboration and approvals,” Tesla wrote in a follow-up post.

Credit: Tesla Charging | X

Credit: Tesla Charging | X

Credit: Tesla Charging | X

Credit: Tesla Charging | X

READ MORE ON TESLA SUPERCHARGERS: Tesla launches ultra-fast V4 Superchargers in China for the first time

Testing at the LA Diner, plus Musk update on potential Tesla solar Gigafactory

The huge Tesla Supercharger station completed phase one of construction fairly quickly, especially given how long Tesla has been working on its unique Los Angeles diner, drive-in, and Supercharger location. Still, the company was seen performing some testing at the nearly-completed charging station earlier this month, and will reportedly be holding a job fair.

Elon Musk also responded on Monday morning to a post on X, suggesting that Tesla is “thinking about” building a U.S.-based solar Gigafactory in order to help support increased power needs with AI growth, and to bolster domestic solar production.

Tesla is building a new UFO-inspired Supercharger in the heart of Alien country

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