NASA Artemis 3 Journey Begins! SpaceX & BO Speed up to Become First HLS…

Artemis 2 is over. While many of us are still admiring the incredible mission highlights and celebrating a flawless return to lunar space, it seems NASA is already looking past the horizon entirely ready for the next massive step. Next stop, Artemis 3. And related work has already begun in earnest. The stakes for this next mission are astronomically high as it represents humanity's long-awaited return to the lunar surface. Because of this, commercial partners like SpaceX and Blue Origin are also accelerating their development to follow up on NASA's momentum. So how exactly are NASA and these aerospace companies progressing with their preparations for Artemis 3? Are there any hidden challenges or engineering hurdles that we need to be aware of? Let's delve into these on today's episode of Great SpaceX. We have only just finished Artemis 2, but there's no time for complacency within the aerospace sector as there is only a little over a year left until Artemis 3. For an organization often known for a slower production pace like NASA, especially concerning the construction of the SLS and Orion, preparations must begin immediately. There's absolutely no room for delays to keep the lunar program on track. Recently, images from NASA Administrator Jared Isaacman showed that the agency deployed the crawler transporter to launch pad LC-39B. This massive vehicle is assisting in rolling the mobile launcher back to the vertical assembly building after crews spent about two weeks checking the tower at the pad to ensure everything survived the previous launch sequence intact. With the pad checks largely complete, this initial phase will soon wrap up using the specialized systems inside the VAB. The mobile launcher will transition to its main task of serving as the structural backbone for the next moon rocket. The first revealed step is assisting in stacking the solid-side boosters, which provide the vast majority of the thrust needed for liftoff. Under the current architecture, each booster consists of an aft skirt, multiple motor segments filled with solid propellant, a forward assembly, and a nose cone. They are divided into five segments per booster, meaning teams must align ten total segments. Because of the extreme precision required and the sheer weight of these components, this stacking process typically takes three to four months to safely complete. Following the booster stacking, teams will await the arrival of the massive SLS core stage. This giant orange cylinder houses the cryogenic propellants and the main engines. Recently, images emerged showing the core booster being rolled at a NASA facility. In early April, NASA released an update stating this hardware is being prepared for shipment from the historic Michoud Assembly Facility in New Orleans to the Kennedy Space Center, where it'll be integrated with the rest of the vehicle. The start of this shipment allows NASA to soon begin critical integration work at the VAB. Upon arrival, the core booster will be rotated vertically, a delicate process involving specialized cranes lifting hardware the size of a skyscraper. Once vertical, it undergoes insulation repair, final outfitting of sensors and flight computers, and comprehensive electrical testing. These core stage steps take roughly one to three months. When ready, the core stage moves to high bay three to join the solid boosters. It's raised high into the air by ceiling cranes and lowered into the narrow compartment between the waiting boosters. With the mobile launcher holding everything steady, the final assembly relies on mechanical coupling at specific attachment points to lock the three massive components together. This intricate baiting step takes only one to two weeks, assuming perfect alignment. Sitting right on top of that orange core stage, the upper stage of the SLS remains a significant question. NASA currently plans to use an older core upper stage manufactured by Boeing. Unless the architecture changes drastically, this will be used to push the spacecraft toward the moon. However, a strong possibility circulates in aerospace circles that NASA might abandon this component and immediately pivot to the Centaur V, a highly capable upper stage manufactured by ULA. This is the hardware NASA chose to replace the current upper stage in future block upgrades to improve overall payload performance, mission reliability, and deep space launch capabilities. Artemis 3 was always designed as a test mission for the docking station in Earth orbit where the Orion spacecraft will meet the commercial lunar lander. Since the spacecraft does not have to carry as much heavy cargo directly to the moon, the SLS mission profile is less demanding in terms of raw thrust. Because of this, NASA could take advantage of the opportunity to test the new upper stage hardware in a lower risk environment. If proven effective, they could implement it immediately in subsequent crew landing missions, streamlining the manufacturing process and boosting capabilities years ahead of schedule. Once the upper stage is selected, it'll be meticulously installed. If using the older version, assembly involves attaching the launch vehicle stage adapter first, then the interim cryogenic propulsion stage, the Orion stage adapter, the Orion spacecraft, and finally the launch abort system at the very top. With this option, NASA must pay incredibly close attention to fixing hydrogen leaks, an issue that has plagued previous launch attempts. If using the Centaur V, a completely new launch vehicle stage adapter will be required to accommodate the different dimensions. The Centaur V will be stacked on top, followed by a new Orion stage adapter while the Orion spacecraft and launch abort system remain the same. This entire upper stage phase takes 1-2 months. After stacking is complete, NASA transitions into rigorous integration and verification testing to ensure the millions of parts communicate correctly. This includes electrical, mechanical, and pyrotechnics verification, umbilical testing to ensure fuel lines disconnect cleanly, and model testing to observe how the vehicle handles acoustic stress and vibration. This vital phase takes 2-4 months to complete. Finally, when greenlit by mission directors, the crawler transporter will deliver the fully stacked rocket to the launch pad, a journey of approximately 12 hours. Including all of these complex steps, the total timeline is 10-12 months, heavily based on the learning process from the previous two flights. NASA can certainly speed up the work utilizing its growing experience and smoother contractor supply chains. With everything starting now, we can reasonably expect the Artemis III SLS to be ready by April next year. If teams work flawlessly, NASA might even be ready for the first quarter, allowing valuable extra time for wet dress rehearsals and extensive pre-flight checks. The official launch date for Artemis III will likely be confirmed later this year, providing a more rigid timeline for these critical operations. Currently, the overall progress on the SLS rocket and Orion seems quite promising. The Orion capsule itself represents one of the biggest question marks as we march toward the launch date of Artemis III. Its construction is a massive international collaboration, primarily led by Lockheed Martin in the United States with substantial support from our partners in Europe. Specifically, the European Space Agency has commissioned Airbus Defense and Space to build the service module. This component is essentially the spacecraft's life support system and engine room, providing everything from the main thrust and electrical power to the very water and oxygen the astronauts need to survive. It's the ultimate cosmic utility closet, though it's ultimately discarded just before the crew hits the atmosphere, making its performance in deep space the only thing that matters before it becomes a very expensive shooting star. Meanwhile, Lockheed Martin is focused on the crew capsule, the pressurized home where the astronauts actually live and try not to push each other's buttons. The most critical component of this capsule is the heat shield attached to the blunt bottom. This is designed to protect the crew from the blistering heat of re-entry, but it's currently the center of some major engineering anxiety. After the uncrewed Artemis 1 mission returned, inspections showed that the shield was losing material in an unexpected way, which is a polite way of saying chunks were falling off. Even though Artemis 2 appeared smooth to the public, the technical data behind the scenes suggested that the shield is still being a bit unpredictable and problematic. This leaves NASA and Lockheed Martin with a high-stakes choice. Do they refine the current design to achieve higher resistance or pivot to an entirely new material from scratch? Because the clock is ticking, they need to make a call immediately to allow for production and installation. The Artemis 3 capsule is already on the factory floor undergoing rigorous physical exams, including avionics checks and life support testing to ensure the air stays in and the vacuum stays out. Once the heat shield is finally ready and attached, Orion can head to the vertical assembly building to meet the SLS rocket. This integration is the final goal and we are all waiting to see if NASA can solve this thermal riddle in time to stay on schedule. As NASA begins to aggressively accelerate its own internal work, its two primary commercial contractors will essentially have to follow suit or risk delaying the entire lunar program. SpaceX is currently living under a government-sized magnifying glass, mostly because the Starship HLS is still acting like a shy cryptid. We've seen plenty of leaked interior renders, which are great for desktop wallpapers, but NASA is starting to check their watch for an actual physical prototype. With Flight 12, the debut of the V3 hardware, finally in the books after its fashionably late arrival, SpaceX has a checklist longer than a grocery list for a family of 12. They need to prove they can hit orbit reliably, drop off heavy cargo, and nail those two-stage landings. Interestingly, the propellant refueling system has been moved to the not-urgent pile for the current Artemis timeline, but everything else is a mandatory prerequisite for Artemis 3. While the pressure is high enough to turn coal into diamonds, SpaceX is showing some genuine spark. V3 testing is constant, orbital landing goals are locked in, and the hardware for the next flight is already rolling off the line. However, they are essentially trying to cram for a final exam while the teacher is already collecting the papers. Meanwhile, Blue Origin is making progress with the steady, slightly terrifying confidence of a person who actually reads the entire instruction manual. Their New Glenn rocket is consistently hitting its marks, and their Blue Moon Mark 1 prototype, Endurance, is slated for a mid-year launch after surviving a brutal session in the thermal vacuum chamber. For the Artemis 3 mission specifically, Blue Origin already has their aft module and fuel tanks assembled and staring at the competition from the factory floor. In a straight-up hardware pageant, Blue Origin is currently holding the trophy while SpaceX is still backstage looking for its shoes. But this is SpaceX we're talking about. They have the bank account and the workforce to pull off a technological miracle on a weekend if they feel like it. It's a classic race between Blue Origin's methodical crawl and SpaceX's chaotic sprint, and the finish line is getting closer every day. It's safe to say that after the wildly impressive success of the Artemis 2 flyby, the entire world is ready and eager for the next massive historical milestone, Artemis 3. The next few months are essentially a high-stakes escape room for NASA's leadership. They have a massive to-do list. Finish stacking the SLS without losing any bolts, solve the mystery of the Orion heat shield's habit of shedding like a husky in the summer, and finally commit to an upper-stage design. By applying hard-earned lessons from the first two missions, which is basically aerospace speak for let's not do that again, NASA hopes the end of this year will be a highlight reel of integration milestones rather than a series of expensive shrugs. But this isn't just a government project. It's a billionaire-backed drag race. SpaceX and Blue Origin are in a high-stakes sprint toward the lunar surface, though they have very different vibes. SpaceX is currently battling to prove Starship can survive the moon and handle orbital refueling without turning into a very large, very bright firework. Meanwhile, Blue Origin is playing a methodical game with New Glenn moving at a pace that makes a tortoise look like it's breaking the sound barrier. It's a classic class of philosophies. The move-fast-and-break-things energy of SpaceX versus the systematic precision of Blue Origin, where every bolt is probably tucked in and read a bedtime story. As we enter the homestretch of the year, the question is simple. Will SpaceX's raw, chaotic speed be enough to outpace Blue Origin's steady, turtle-like stability? That's all for today's episode of Great SpaceX. I'm Kevin, and as always, keep looking up, mostly to make sure nothing is falling on you.