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SpaceX hangar packed with Falcon Heavy Block 5 boosters for early April debut

Two brand new Falcon Heavy side boosters were spotted inside SpaceX's Pad 39A hangar in a SpaceX video covering preparations for Crew Dragon's launch debut, February 28th. (SpaceX)

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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.

https://www.instagram.com/p/Bu1EarPlvkb/

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.

Official SpaceX renders of Falcon 9 and Falcon Heavy in their Block 5 variants, circa 2019. (SpaceX)

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.

Falcon Heavy ahead of its inaugural launch. (SpaceX)

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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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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SpaceXAI signs agreement with Anthropic for massive AI supercomputer access

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Credit: SpaceX

SpaceXAI announced today that it had signed an agreement with Anthropic to give the company access to its Colossus 1 data center in Memphis, Tennessee.

It is a monumental deal as Anthropic will gain access to all of the compute at the plant, delivering more than 300 megawatts of power and over 220,000 NVIDIA GPUs within the month.

Anthropic’s Claude AI account on X announced the partnership:

We’ve agreed to a partnership with SpaceX that will substantially increase our compute capacity. This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.”

The company is also:

  • Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans;
  • Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and
  • Substantially raising its API rate limits for Opus models.

SpaceX also published its own release on the new agreement, noting that it is “the only organization with the launch cadence, mass-to-orbit economics, and constellation operations experience to make orbital compute a near-term engineering program rather than a research concept.”

CEO Elon Musk also commented on the partnership and shed light on intense meetings he had with senior members of Anthropic last week, stating, “nobody set on my evil detector.”

This has turned the argument that SpaceX is as much an AI company as a space exploration company into a very valid argument:

SpaceX is following in Tesla’s footsteps in a way nobody expected

Nevertheless, this is an incredibly valuable and important move in the grand scheme of things. AI scaling is fundamentally bottlenecked by compute, and demand for Claude has surged, bringing terrestrial power grids, land, and cooling operations hitting limits everywhere.

Anthropic has been aggressively signing multiple large-scale deals to be competitive in the space, including:

  • Up to 5GW with Amazon
  • 5GW with Google and Broadcom
  • Strategic $30b Azure deal with Microsoft/NVIDIA
  • $50b U.S. infrastructure investment with Fluidstack

Access to Colossus 1 gives Anthropic immediate relief on NVIDIA GPU capacity. For SpaceXAI, it turns its rapid buildout into revenue. It also showcases its ability to deliver at world-leading speed and scale.

Most importantly, it plants the seed that its much larger vision, orbital AI compute, is totally viable.

Starlink V3 satellites could enable SpaceX’s orbital computing plans: Musk

Within the month, Anthropic will begin using 100 percent of Colossus 1’s compute, directly expanding capacity for Claude Pro and Max subscribers and the API. This means fewer limits, faster responses, and support for heavier workloads.

In the long term, meaning 2026 and beyond, there will be a continued rollout of other multi-GW deals Anthropic has signed, and an early exploration of orbital compute with SpaceXAI.

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Elon Musk

SpaceX Board has set a Mars bonus for Elon Musk

SpaceX has given Elon Musk the goal to put one million people on Mars.

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Rendering of a colonized Mars by way of SpaceX

SpaceX’s board approved a compensation plan for Elon Musk that ties his pay directly to colonizing Mars and building data centers in outer space. The details surfaced this week after Reuters reviewed SpaceX’s confidential registration statement filed with the Securities and Exchange Commission, making it one of the first concrete looks inside the company’s financials ahead of a public offering.

The pay package will reportedly award Musk 200 million super-voting restricted shares if the company hits a market valuation milestone, with the most ambitious targets going further. To unlock the full award, SpaceX would need to reach a $7.5 trillion valuation and help establish a permanent human settlement on Mars with at least one million residents. Additional incentives are tied to developing space-based computing infrastructure capable of delivering at least 100 terawatts of processing power.

SpaceX wins its first MARS contract but it comes with a catch

Long before SpaceX filed anything with the SEC, Elon Musk had already spent years framing Mars colonization as an insurance policy against human extinction. The philosophy traces back to at least 2001, when Musk first began researching Mars missions independently, before SpaceX even existed. By 2002 he had founded the company with Mars as the stated long-term goal.

In a 2017 presentation at the International Astronautical Congress, Musk outlined the specific vision that still underpins SpaceX’s architecture today. He described a self-sustaining city on Mars requiring roughly one million people to become viable, the same number now written into his compensation package.

SpaceX’s Starship, still in active development, was designed from the ground up to support the eventual colonization of Mars. Musk has stated publicly that getting the cost per ton to Mars below $100,000 is necessary to make mass migration economically feasible. Everything from Starship’s payload capacity to its full reusability targets flows from that single constraint. One can say that Musk’s latest compensation package has put a formal valuation on Mars for the first time.

SpaceX is targeting an IPO around June 28, Musk’s birthday, at a valuation of approximately $1.75 trillion. Between the Mars rover contract, the Golden Dome software group, Space Force satellite launches, and now a pay structure built around interplanetary colonization, SpaceX has become the single most consequential contractor in American space and defense. The IPO will put a public price tag on all of it for the first time.

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UPDATE: SpaceX’s Falcon Heavy that launched a Tesla into space is back on a mission

SpaceX Falcon Heavy returns after 18 months away to deliver a satellite that only it could carry.

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UPDATE: 10:29 a.m. et: SpaceX is standing down from today’s Falcon Heavy launch of the ViaSat-3 F3 mission due to unfavorable weather. A new target date will be shared once confirmed.

After an 18-month absence, SpaceX’s Falcon Heavy is returning to mission on Monday morning when it’s scheduled to lift off from Launch Complex 39A at Kennedy Space Center at 10:21 a.m. EDT.

The mission is called ViaSat-3 F3, and the heavy satellite payload needs to reach geostationary orbit, sitting 22,236 miles above Earth where its speed matches the planet’s rotation. Getting a satellite that heavy to that altitude demands more thrust than a single-core Falcon 9 can deliver.

This marks the Falcon Heavy’s 12th flight overall since its debut in February 2018, and its first since NASA’s Europa Clipper mission in October 2024.

Arguably, the most exciting element for spectators will be watching the booster recoveries in action when the two side boosters, B1072 and B1075, will attempt simultaneous landings at Landing Zone 2 and the newer Landing Zone 40 at Cape Canaveral Space Force Station, while the center core will be expended over the ocean.

SpaceX wins its first MARS contract but it comes with a catch

Following satellite deployment, expected roughly five hours after launch, ViaSat-3 F3 will spend several months traveling to its final orbital slot before undergoing in-orbit testing, with service entry expected by late summer 2026

As Teslarati reported, NASA awarded SpaceX a $175.7 million contract on April 16, 2026, to launch the ESA Rosalind Franklin Mars rover aboard a Falcon Heavy no earlier than late 2028, which would mark the first time SpaceX has ever sent a payload to Mars. That contract came on top of an already deep pipeline that includes the Roman Space Telescope, the Dragonfly Saturn mission, and multiple national security payloads.

SpaceX executed 165 missions in 2025 and now accounts for approximately 85% of all global orbital launches. With Starlink surpassing 10 million subscribers and an IPO targeting a $1.75 trillion valuation still ahead, Monday’s launch is one more data point in a company that has quietly become the backbone of both commercial and government space access worldwide.

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