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SpaceX’s second Falcon Heavy launch slips into next week out of caution

(SpaceX)

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Update: No official comment has been offered but sourced reports indicate that SpaceX’s second Falcon Heavy launch will slip from a target of April 7th into “next week”, April 8-14. The massive rocket’s critical static fire test has also been pushed from April 4th to 5th, allowing additional time for SpaceX engineers and technicians to verify Falcon Heavy’s health. Stay tuned as we get closer to that test ignition and SpaceX releasing an official launch date.

The first Block 5 variant of SpaceX’s Falcon Heavy rocket has rolled out to Launch Pad 39A for an inaugural launch that could occur as early as April 7th. Minor delays, however, are extremely likely for the second Falcon Heavy launch attempt ever, with the most likely dates resting closer to April 8-11.

With an appearance noticeably deviating from Falcon 9 Block 5’s more tuxedo-esque exterior, Falcon Heavy and its all-new boosters still sport the same polished white skin and some of the black, felt-like thermal protection that helps to make the upgraded boosters so reusable. That reusability will be tested to the extreme as few as two months after launch – assuming all goes well – with the US Air Force’s STP-2 mission, set to reuse both of Falcon Heavy Flight 2’s side boosters, B1052 and B1053.

Above all else, it should be noted that the likelihood of Falcon Heavy Flight 2’s actual launch date slipping is not to say that anything at all is technically or operationally wrong with the rocket or ground support equipment (GSE). Rather, it’s simply a dose of pragmatism for a launch date that was originally approved on the range alongside a static fire on March 31st. In other words, SpaceX was anticipating the need for approximately seven days between static fire and launch, a fairly believable target relative to Falcon Heavy’s first launch flow.

Even if SpaceX completes a flawless Falcon Heavy static fire immediately after the 6 pm EDT window opens, this would give company engineers and technicians less than 72 hours to turn the rocket around for launch as soon as 6:36 pm EDT on April 7th. That process involves a huge amount of work, including the actual static fire, safely detanking (removing propellant), returning to Pad 39A’s hangar, installing the payload fairing, ensuring payload health, rolling back out to the pad, and integrating the transporter with the launch mount. Throughout, many checks and double checks are made to ensure that everything is ready for flight.

Safely completing that work in ~72 hours is extremely difficult for Falcon 9, let alone a significantly modified Falcon Heavy preparing for the vehicle’s second launch attempt ever. For reference, excluding a few outlier launches, Falcon 9 Block 5’s mean time between static fire and launch is ~4.7 days, while the mode is 5 days (6/10 launches). Outliers include missions like SSO-A, DM-1, and GPS III SV01, all of which required unique care and caution for various reasons. Chances are good that Falcon Heavy Flight 2 will probably improve upon Flight 1, which took several days to complete a static fire and 13 more days before a launch attempt. Still, the rocket is very unlikely to beat Falcon 9 Block 5’s average time-to-launch.

Falcon Heavy prepares for its inaugural launch, February 2018. (SpaceX)

All in good time

There is probably a 5% chance of Falcon Heavy launching on April 7th even if the static fire happens right on time and shows all systems running in the green. If SpaceX is unable to fit a static fire into the April 4th window, that will likely slip to 0%. Either way, we can expect SpaceX to provide an updated launch window or rough estimate as early as today, especially if the static fire test is successfully completed.

In the meantime, drone ship Of Course I Still Love You (OCISLY) – accompanied by a tug boat – is heading nearly 1000 km (620 mi) into the Atlantic Ocean to prepare for the attempted recovery of Falcon Heavy’s center core. In other words, it will likely be the fastest and farther a SpaceX booster has ever traveled while still attempting to land. Just Falcon Heavy’s launch debut, both side boosters will attempt to land back at Landing Zones 1 and 2 (LZ-1 & LZ-2) around 8-10 minutes after liftoff. The 6000-kg (~13,200 lb) Lockheed Martin-built Arabsat 6A satellite will be the rocket’s first commercial payload, likely heading to a high-energy geostationary transfer orbit.

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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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SpaceX tells the FCC that Starship Flight 14 is going to orbit

SpaceX filed with the FCC for Starship Flight 14, its first true orbital launch attempt.

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SpaceX has asked the Federal Communications Commission for permission to fly Starlink terminals during Starship’s fourteenth flight test, and the filing lays out a genuine trip to orbit, something the program has never attempted.

Every Starship flight so far, including Flight 13’s successful splashdown in the Indian Ocean on July 24, has flown a suborbital arc that ends with the ship reentering the atmosphere within the same hour it launches. The FCC paperwork describes a mission profile built around an actual orbital insertion instead.

The payload is the other half of the story. Flight 13 carried 20 production Starlink V3 satellites, but because that mission never reached orbit, the satellites reentered along with the ship rather than joining the constellation, something Teslarati covered in detail after SpaceX released footage shot from one of those satellites as it drifted away from Starship in space. Flight 14 is designed to close that gap. If the orbital insertion holds, the roughly 20 V3 satellites onboard would separate into an operational orbit and could eventually go into service, each one rated for about 1 terabit per second of downlink capacity by SpaceX’s own account.

SpaceX announces new Starbase for ‘thousands of Starship launches annually’

Elon Musk first flagged the orbital attempt during SpaceX’s August 4 earnings call, the company’s first as a public entity following its June IPO under the ticker SPCX. He also floated catching the ship with the Starbase tower on the same flight, an idea he walked back on August 20, saying the catch attempt would more likely come “in a few months,” as Teslarati reported at the time. Flight 14 will instead target a splashdown for the ship in the Indian Ocean, the same recovery method used since Flight 12.

Hardware has been catching up to the ambition. Booster 21 completed a full 33-engine static fire on August 28, and Ship 41 finished its own six-engine test the week before. An airspace briefing circulated to pilots on August 20 listed September 15 as the target date, later than the end of August window Musk mentioned on the earnings call, though SpaceX has not confirmed a launch date publicly and Starship schedules routinely slip while hardware and FAA paperwork line up.

The FCC filing itself does not guarantee a launch date. It covers communications authority, and not flight readiness, considering SpaceX still needs Ship 41 fully stacked and cleared by the FAA before Flight 14 can fly. But the filing is a real marker of intent and it puts a specific regulatory process behind what had so far only been Musk’s word on the earnings call.

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SpaceX would not exist if this crucial early launch failed, Musk says

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Credit: SpaceX

Elon Musk recently restated a fact that still defines SpaceX’s origin story: if Falcon 1’s fourth launch had failed, the company would not exist. The comment answered a reminder that after three consecutive losses, SpaceX had money for only one more attempt.

On X, Peter Diamandis said that the present-day acknowledgement of SpaceX’s success does not discount the rough start the company had. “Almost nobody remembers that Elon’s first rocket failed three times, and there was money for exactly only one more attempt.”

Musk said, “If the 4th launch had failed, SpaceX would not exist.”

In late 2008, the firm was nearly out of cash. Another failure would have ended payroll, closed the Hawthorne factory, and left the Falcon 9 and Dragon programs as unfinished drawings.

The first flight lifted off from Omelek Island on 24 March 2006. Thirty-three seconds later, a corroded aluminum fitting on a fuel line leaked. Kerosene ignited around the Merlin engine, control was lost, and the vehicle came apart. The small DARPA payload, FalconSAT-2, survived the short flight only to land on a storage shed near the pad. Investigators later traced the fitting to a materials mix-up that should never have reached the rocket.

Flight 2, on 21 March 2007, looked far better at first. The first stage burned cleanly and handed off to the Kestrel-powered upper stage. The vehicle crossed 100 kilometers and reached a peak of about 289 kilometers. Then propellant slosh in the second-stage tank started a circular coning motion that grew until the engine shut down. Telemetry faded as the stage tumbled, and SpaceX had reached space but not orbit. Over the next year, the team redesigned everything from the ground up, including tanks, baffles, and the new regeneratively cooled Merlin 1C.

That engine flew on Flight 3 on 2 August 2008. The first stage performed almost perfectly and reached 217 kilometers. After main-engine cutoff, leftover fuel in the cooling channels produced a faint residual thrust, roughly 10 pounds per square inch of chamber pressure. On a Texas test stand, the effect was invisible beneath ambient air pressure. In vacuum it was enough to push the spent first stage back into the second stage after separation. The stages collided, the upper stage spun, and the mission was lost. Musk later said a slightly longer delay before staging would have saved the flight.

Six weeks later, the team assembled Flight 4 from remaining parts and flew it on 28 September 2008 at 23:15 UTC. The payload was Ratsat, a 165-kilogram aluminum mass simulator built in-house. Staging was delayed so residual thrust could decay. The Kestrel ignited, the fairing split away, and nine and a half minutes after liftoff the vehicle was in orbit. After a coast, the second stage restarted, settling into a 621-by-643-kilometer path at 9.35 degrees inclination. Falcon 1 became the first privately developed liquid-fueled rocket to reach Earth orbit. Musk called the insertion “middle of the bull’s-eye.”

SpaceX restores a Falcon 1 rocket for 10th anniversary of first launch success

That success unlocked NASA’s Commercial Resupply Services award later that year. Without it, there would have been no Falcon 9, no reusable first stages, and no Dragon cargo or crew flights to the International Space Station. Launch prices would have remained far higher. Starlink’s constellation would not exist; broadband from low Earth orbit would still be a paper concept.

Ride-share markets, high launch cadence, and the current pace of lunar and Mars hardware would be years behind. Communications, Earth observation, and the cost of putting anything into space would look more like the 2000s than the 2020s.

One extra second of residual thrust in August 2008 would have written a different decade.

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OpenAI cites distrust of SpaceX in decision to drop Cursor partnership

OpenAI will cut SpaceX-owned Cursor’s model access in November, citing Musk’s history of broken contracts.

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OpenAI, the company behind ChatGPT, announced late Friday that it is ending its partnership with Cursor, cutting off the coding tool’s access to its models on November 12. The move comes two weeks after SpaceX completed its $60 billion acquisition of Cursor’s parent company, Anysphere, folding the popular AI coding assistant into Elon Musk’s growing SpaceXAI division.

In a post on its website, OpenAI said the decision came down to trust, not technology. “We cannot be confident that SpaceX will use our technology within our terms of service, based on our experience with Elon Musk’s companies violating contracts,” the company wrote. OpenAI pointed to two specific incidents: X, now part of SpaceX, allegedly breaking the terms of an existing OpenAI contract after Musk bought Twitter.

That lawsuit is the backdrop for all of this. Musk cofounded OpenAI in 2015, left the board in 2018, and sued Sam Altman and Greg Brockman in 2024, arguing they abandoned the company’s nonprofit mission for profit. A federal jury sided with OpenAI in May, finding Musk waited too long to sue rather than ruling on the merits of his claims. Musk said at the time he would appeal to the Ninth Circuit, calling the outcome a “calendar technicality” rather than a real judgment.

Elon Musk breaks silence on OpenAI trial decision

SpaceX’s interest in Cursor predates that verdict by weeks. The company first struck a deal with Cursor in April, securing an option to acquire it for $60 billion or pay $10 billion for joint development work instead. As Teslarati reported at the time, the logic was straightforward: Cursor was paying retail prices to Anthropic and OpenAI, two of its most direct competitors, every time a developer used its product, while SpaceX had idle capacity on its Colossus supercomputer, roughly the equivalent of a million Nvidia H100 GPUs, that Cursor could use to train its own models instead. SpaceX exercised the option in June, days after its own IPO, and the deal closed in mid-August.

Once it closed, Musk moved fast. On an all-hands call with more than 1,000 Cursor employees, he reportedly told staff that SpaceXAI’s Grok was playing catchup in the AI race, unlike Tesla and SpaceX in their own markets, and singled out Anthropic as the company to catch. Cursor CEO Michael Truell now reports directly to Musk inside SpaceXAI.

Elon Musk admits he was ‘clearly wrong’ about Anthropic

Losing OpenAI’s models leaves Cursor leaning harder on Anthropic’s Claude, which has its own compute agreement with SpaceX, and on Cursor’s in-house Composer model, the one SpaceX’s compute was supposed to accelerate in the first place. OpenAI framed the November deadline as maximum notice under its contract, and said it wants to “go above and beyond” to help developers through the transition. Whether Anthropic makes the same call is now the open question in AI coding.

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