SpaceX
SpaceX hangar packed with Falcon Heavy Block 5 boosters for early April debut
For a company that rarely reveals anything without explicit intent, a February 28th video posted by SpaceX during the lead-up to Crew Dragon’s launch debut featured a surprise cameo: two Block 5 side boosters meant to support Falcon Heavy’s commercial debut and second launch ever.
Likely a subtle nod to close observers and fans, the inclusion of Falcon Heavy is a perfect bit of foreshadowing for the next launch set to occur from Pad 39A after Crew Dragon’s flawless orbital debut. As of now, Falcon Heavy Flight 2 is settling in on a potential launch as early as the first week of April, although delays during the rocket’s critical preflight processing and static fire test are about as likely as they were during the vehicle’s inaugural mission. If the rocket’s first launch and booster recoveries are fully successful, both side boosters (and perhaps the center core) could fly for a second time as few as two months later in June 2019.
A number of photos taken by Instagram users visiting Kennedy Space Center appear to indicate that SpaceX has more or less completed the reconfiguration of Pad 39A’s transporter/erector (T/E), modifying the base with additional hold-down clamps to account for three Falcon boosters instead of the usual one. Ten days after the successful launch of Falcon 9 B1051 in support of Crew Dragon’s first mission to orbit, it’s likely that additional work remains to ensure that 39A is fully refurbished and reconfigured for Falcon Heavy.
For the heavy-lift rocket’s commercial debut and second flight ever, SpaceX is likely to be exceptionally cautious and methodical in their preflight preparations. This is especially necessary due to the fact that Falcon Heavy Flight 2 differs dramatically from Falcon Heavy’s demo configuration, degrading the applicability of some aspects of the data gathered during the rocket’s largely successful test flight.
Most notably, all three first stage boosters will be Block 5 variants on their first flights, whereas Flight 1’s first stage featured two flight-proven Block 2 boosters (B1023 and B1025) and one new Block 3 booster (B1033). Additionally, the center core – B1033 – was lost during a landing anomaly that prevented the booster from reigniting its engine for a landing burn, cutting off another valuable source of data that would have served to better inform engineers on the performance of Falcon Heavy’s complex and previously unproven mechanical stage separation mechanisms.
Falcon 9 Block 5 is a fairly radical departure from the Block 2 and 3 variants SpaceX based Falcon Heavy’s initial design on. It’s possible that the rocket’s engineers were able to at least set up that design and manufacturing work on a safe path to forward compatibility, but it’s equally possible that so much work was focused on simply getting the vehicle past its launch debut that compatibility with Falcon 9 Block 4 and 5 was pushed well into the periphery. Considering the fact that it has now been more than a year since Falcon Heavy’s February 6th, 2018 debut, the latter eventuality offers a much better fit. Nevertheless, with a solid 13-14 additional months of redesign and testing complete, it seems that SpaceX is keen to get its super heavy-lift launch vehicle back on the horse, so to speak.
The specific changes made in Falcon 9 Block 4 is unclear aside from a general improvement in Merlin 1D and MVac performance, as well as significant upgrades to Falcon 9’s upper stage, likely focused on US military and NASA requirements for long-coast capabilities on unique mission profiles. Most significantly, Falcon 9 Block 5 transitioned the SpaceX rocket to a radically different primary thrust structure (also known as the octaweb), replacing welded assemblies with bolted assemblies wherever possible. This simultaneously allows for easier repairs and modifications, improves ease of manufacture, and increases the structure’s overall strength, a critical benefit for Falcon Heavy’s heavily-stressed center core. Meanwhile, Falcon 9 Block 5 moved from Full Thrust’s (Block 3/4) maximum 6800 kN (1,530,000 lbf) of thrust to more than 7600 kN (1,710,000 lbf), an increase of roughly 12%. Combined with Block 5’s focus on extreme reusability, SpaceX engineers and technicians likely had to do a huge amount of work to leap from Falcon Heavy Flight 1 to Flight 2.
Aside from the presence of both Falcon Heavy side boosters, both of which were spotted arriving in Florida by local observers, the first Block 5 Falcon Heavy center core also very likely arrived within the last few months, followed rapidly by can be assumed to be the mission’s fairing and Falcon upper stage. Falcon Heavy’s commercial debut will see the rocket attempt to place communications satellite Arabsat 6A – weighing around 6000 kg (13,200 lb) – into a high-energy geostationary orbit, either direct-to-GEO or a transfer (GTO) variety.
If all goes according to plan, SpaceX will attempt to turn around Falcon Heavy’s Block 5 side boosters (B1052 and B1053) for Falcon Heavy’s third launch – the USAF’s STP-2 mission – as few as 60-80 days later, June 2019. According to NASASpaceflight, STP-2 will fly with a new center core (presumed to be B1057) instead of reusing Arabsat 6A’s well-cooked B1055 booster.
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SpaceX is gearing up for the 13th Starship integrated flight test, which is currently scheduled for Thursday, July 16, with the launch window opening up at 6:30 PM E.T. from Starbase in South Texas.
This mission, the second with the V3 Starship and Super Heavy vehicles, builds directly on the foundation of Flight 12 while introducing ambitious new objectives, including the debut deployment of next-generation Starlink V3 satellites.
The rapid iteration between flights underscores SpaceX’s “fail fast, learn faster” philosophy, with engineers addressing specific anomalies from the previous test to push reusability and payload capabilities further.
Starship’s thirteenth flight test is preparing to launch as early as Thursday, July 16 → https://t.co/Rp7VwBzpWx pic.twitter.com/jdpFlQUEpF
— SpaceX (@SpaceX) July 11, 2026
Flight 12 occurred earlier in 2026 and encountered notable challenges that became catalysts for Flight 13’s improvements. Issues included booster course deviations during the flip maneuver after stage separation, reusability problems with Super Heavy’s Raptor engine relights for the boostback burn, and an engine-out event on the Starship upper stage during its propulsion phase.
These hiccups, while they did not prevent overall mission success, highlighted areas needing refinement for more consistent performance and higher safety margins in future operational flights.
Elon Musk called it Epic: The full story of SpaceX’s Starship Flight 12
In response, SpaceX implemented a comprehensive suite of both hardware and software upgrades.
For the booster, engineers developed a more robust stage separation flip sequence to maintain stable orientation and prevent off-course rotation. Hardware modifications have enhanced Raptor re-light reliability during the boostback burn, complemented by updated engine alarms and abort logic tailored for multi-engine operations. On the Starship side, propulsion system changes directly tackle the Flight 12 engine-out scenario, improving redundancy and operational resilience.
Another major focus of SpaceX for Flight 13 was the advancements in the heat shield. New tile designs and attachment mechanisms, including tests of aft flaps and skirts, aim to boost durability.
Load-sensing tiles will measure real-time stresses during atmospheric entry, while white-painted tiles simulate missing ones as imaging targets. Six of the 20 Starlink V3 satellites carried aboard will feature specialized cameras to scan and transmit heat shield imagery back to ground teams, providing critical data for future return-to-launch-site attempts.
The mission profile also includes a higher dynamic pressure ascent to stress-test the thermal protection system and increase payload potential, alongside a planned in-space Raptor engine relight demonstration.
The V3 Starlink satellites themselves mark a leap forward, equipped with laser links, deployable solar arrays, and improved antennas to expand network capacity and speeds.
The company wrote:
“For the first time, Starship will carry V3 Starlink satellites to space, which aim to greatly expand the network’s capacity and user speeds. As part of this initial test, Starship is planned to deploy 20 satellites which will extend solar arrays and antennas and will attempt to connect with ground stations in South Africa and the larger Starlink constellation via high-capacity lasers. Six of the satellites have been modified with a suite of cameras to scan Starship’s heat shield and transmit imagery down to operators to continue testing methods of analyzing Starship’s heat shield readiness for return to launch site on future missions. Several tiles on Starship have been painted white to simulate missing tiles and serve as imaging targets in the test.”
This dual-purpose flight tests both vehicle reliability and satellite tech in one integrated operation.
These iterative changes, catalyzed by Flight 12’s data, position Starship closer to rapid reusability goals essential for ambitious programs like Artemis lunar missions and global Starlink coverage.
As SpaceX continues its aggressive test cadence, Flight 13 exemplifies how targeted engineering responses to real-flight anomalies accelerate progress toward fully operational, high-cadence launches. Success here could mark another milestone in the Starship program for SpaceX.
SpaceX is preparing for the 13th integrated flight test of its Starship system, with a targeted launch as early as Thursday, July 16. The 90-minute launch window opens at 5:45 p.m. CT from Starbase in South Texas.
This comes roughly seven weeks after Flight 12 on May 22, underscoring the company’s accelerating pace in its rapid development campaign. The mission will use the latest Starship and Super Heavy V3 vehicles equipped with Raptor 3 engines. Booster 20 will attempt a controlled boostback burn, followed by a splashdown in the Gulf of Mexico, while Ship 40 will follow a suborbital trajectory.
Starship’s thirteenth flight test is preparing to launch as early as Thursday, July 16 → https://t.co/Rp7VwBzpWx pic.twitter.com/jdpFlQUEpF
— SpaceX (@SpaceX) July 11, 2026
Key objectives for Flight 13 will include demonstrating reliable stage separation, engine performance under various conditions, and controlled reentry.
A major milestone for Flight 13 is the first deployment of 20 next-generation Starlink V3 satellites. These satellites feature advanced laser links for inter-satellite communication, deployable solar arrays, and onboard cameras, six of which will capture imagery of Starship’s heat shield during flight.
Several heat shield tiles on Ship 40 will be painted white to serve as imaging targets, while additional experiments test upgraded tiles on aft flaps, modified attachments on the aft skirt, and load-sensing tiles to measure stresses. The upper stage will also attempt a single Raptor engine relight in space before a targeted splashdown in the Indian Ocean.
These tests build directly on lessons from Flight 12, which introduced the V3 configuration but encountered issues including a booster flip anomaly during boostback and an engine-out event on the ship. Hardware and software modifications on Booster 20 and Ship 40 aim to improve engine relight reliability, startup sequencing, and overall robustness.
Next Starship launch aiming for Thursday https://t.co/SajPPd4pdb
— Elon Musk (@elonmusk) July 12, 2026
The short interval between Flights 12 and 13 highlights SpaceX’s iterative approach. Elon Musk has repeatedly emphasized that Starship launches will become “incredibly common” in the coming years.
The company envisions scaling to rates as high as one launch per hour within 4-5 years, potentially enabling thousands of flights annually. Such cadence is essential for Starship’s goals: establishing orbital refueling for lunar and Mars missions, deploying massive satellite constellations, and making life multiplanetary.
With each flight, Starship edges closer to full reusability and operational maturity. Success on July 16 would mark another step toward routine access to space and the ambitious vision of humanity becoming a spacefaring civilization.
Elon Musk posted a candid admission on his social media platform X on June 9, declaring that he had been “clearly wrong” about Anthropic. The statement marked a notable reversal from his earlier skepticism toward the AI company.
In September, Musk had written, “Winning was never in the set of possible outcomes for Anthropic,” reflecting his view at the time that the startup had lacked the foundation or even the trajectory to succeed in what is an incredibly intense race for advanced artificial intelligence.
Musk’s latest post came amid discussion of Anthropic’s reliance on external compute resources. He praised the company’s progress, stating that Anthropic is “obviously currently the leader in AI” and that “no company has released a model as good as Mythos/Fable,” with expectations of a strong follow-up in Mythos 2.
The tone shifted dramatically from dismissal to acknowledgement of superior performance.
I was clearly wrong about Anthropic. They are obviously currently the leader in AI. No company has released a model as good as Mythos/Fable and they will undoubtedly have Mythos 2 ready soon.
And I would never cut them off in a way that hurt them badly, even as a competitor.…
— Elon Musk (@elonmusk) July 9, 2026
The context of Musk’s comments added significance. Anthropic has been operating under a recent compute deal with SpaceXAI, Musk’s AI infrastructure-focused venture. The pair entered a short-term GPU lease agreement initiated in May, providing Anthropic access to critical computing power for training and deploying its frontier models.
SpaceXAI signs agreement with Anthropic for massive AI supercomputer access
Some observers had speculated that Musk could leverage this dependency to disadvantage a rival. Musk directly addressed the possibility, writing, “I would never cut them off in a way that hurt them badly, even as a competitor. That’s not my style.”
To support his commitment to ethical competition, Musk referenced concrete examples from his other companies. Tesla famously open-sourced its entire portfolio of electric vehicle patents in 2014. The move was designed to accelerate the global adoption of sustainable transportation technology rather than protect proprietary advantages.
Tesla also made its Supercharger network available to competing electric vehicle manufacturers, transforming what could have remained an exclusive charging ecosystem into a shared infrastructure that benefits the broader industry and reduces barriers for EV adoption.
Musk further pointed to SpaceX’s practices, noting that the company launches satellites for competing commercial systems “with no increase in price or use of unfair terms.” He extended the principle to his social platform, observing that “even my worst enemies attack me on this platform,” underscoring preference for open discourse over retaliation.
These examples have illustrated Musk’s long-standing philosophy that long-term technological progress is best served by open competition and infrastructure sharing rather than leveraging market power to stifle rivals. In the fast-evolving AI sector, where compute resources and model capabilities determine leadership, Musk’s stance suggests a willingness to compete on innovation and performance alone.
Musk’s admission arrives as SpaceXAI itself advances its own frontier models while maintaining business relationships across the ecosystem. By publicly correcting his earlier assessment and reaffirming principles of fair play, Musk highlights a model of competition that prioritizes advancement of the field over short-term tactical advantages.
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