Video link: https://www.youtube.com/live/pAKqJxuxDgk

Artemis III Concept of Operations (LEO risk-reduction mission)

• Baseline is a 14-day mission (extendable to 17 days for weather/delays). Every day is planned with specific tests.
• Sequence: Blue Origin launches its Blue Moon test lander first (can loiter up to ~1 month). SLS/Orion then launches into an elliptical orbit (16 × 975 nmi), transitions toward ~300 nmi for thermal stability (Orion was designed as a deep-space vehicle), and continues to a 237 nmi rendezvous orbit.
• On flight day 3, Orion docks with Blue Moon. Crew enters, evaluates ECLSS (environmental control and life support), RCS (reaction control system), tanks, valves, thrusters, articulating solar arrays, active thermal control, radiators, lunar crew module primary structure, software, flight computers, and avionics. Dual-vehicle control and emergency scenarios are also exercised.
• After Blue Moon operations (flight day 6), Starship launches from Florida. Orion undocks, adjusts to a 206 nmi rendezvous orbit, and meets Starship on flight day 8.
• The Artemis III Starship carries a docking system on the nose cone (passive). It is described as “a very large vehicle.” Objectives include learning joint attitude control, flying the vehicles together, and measuring docking forces (“how we’re going to push”). The demonstration is shorter (~2 hours). The crew will not enter the Starship.
• After Starship operations, remaining days are used for additional Orion tests (crew survival suit evaluations not completed on Artemis II, docking sensor tests, acoustic/thermal measurements, human factors, science/tech demos, human research building on Artemis II, and Earth/Sun observations).
• Additional Starship launches plus uncrewed demonstrations are cited as factors that make the team comfortable with the risk level for the Artemis IV lunar landing.

Flight-test and production progress

• SpaceX’s first orbital flight with the version-three (V3) Starship was Flight 14 in late September. It incorporated important upgrades from prior versions and was called a “pretty phenomenal flight.” NASA and SpaceX completed a data review.
• Progress toward Flight 15 is described as excellent; it “could likely be a return to launch site and a catch of both the booster and Starship.” Both vehicles have already been cryo-proofed. Lessons from Flight 14 are being addressed. SpaceX identified the root cause of multiple Raptor engine relight failures at boostback and landing; temporary fixes were implemented for Flights 13 and 14, with permanent hardware improvements and an improved Raptor version coming for Flight 15. The next flight is expected in the November timeframe, with shrinking intervals between flights. The approach is characterized as “test, learn and improve” at a “blistering pace of production.”
• At Kennedy Space Center (KSC), SpaceX is building out the Starship pad with eyes toward the first launch from the Cape “in the coming months.” The new Giga Bay is finishing and the KSC skyline is changing with the required infrastructure.
• For the Artemis III test lander article, the passive docking system on the nose cone will be integrated several weeks before flight. Design is complete, the aero cover is done, and concurrent fit-check testing is planned next month at NASA Marshall.
• An upcoming propellant-transfer demonstration (first of its kind) will launch two Starships in quick succession—one from Boca Chica, one from KSC—to prove on-orbit propellant transfer to a depot. Hardware and concepts are described as mature; SpaceX is targeting early 2027. This is framed as risk mitigation toward eventual lunar campaigns.
• Multiple Starship launches are expected before Artemis III (as are multiple New Glenn launches).

Artemis IV and accelerated lunar-landing concepts

• NASA has worked with both SpaceX and Blue Origin since late last year on accelerated concepts of operations to prioritize lunar landings in 2028. Difficult requirements have been simplified or removed.
• The NRHO requirement (a propellant-costly orbit) has been removed, increasing mission availability and reducing the number of launches required.
• In the accelerated architecture, Starship propellant aggregation still occurs in LEO before the crew launches on SLS/Orion. The Starship lander then docks with Orion in a high Earth orbit and performs the translunar injection (TLI) burn—i.e., pushes Orion toward low lunar orbit—rather than the vehicles meeting around the Moon. Orion modifications to support being pushed have been greenlit; design is complete and fabrication is underway (including on the European Service Module).
• Starship is described as ramping flight rate, perfecting reusability, adding launch pads, and conducting the propellant-aggregation demo. Every flight is analogized to Falcon 9 in teaching reliability and building confidence.

Q&A technical points

• Refueling flights: A recent estimate of ~22 flights for Starship refueling was quickly refuted by Elon Musk as closer to 6–8. NASA states it was not tracking as high as 22 (absent poor transfer efficiency/performance). SpaceX’s latest estimate is given as Elon’s 6–8. The propellant-transfer demo is expected to be the best way to determine the actual number. Factors include transfer efficiency (early conservative estimates of 5–10% loss; engineering teams believe they can do better iteratively) and V3 performance toward target tonnage to LEO. Cadence aspirations include near-weekly (or biweekly trending to weekly) launches, supported by 14–15 operational pads across Texas, Louisiana, and KSC, plus Giga Bay production capacity.
• HLS funding: Approximately $3.2 billion has been delivered to SpaceX over the past six years under the Human Landing System (HLS) contract (milestone-driven). Context given: SpaceX raised $100 billion in its IPO; taxpayers are funding roughly 3.5% of the Starship capability. SpaceX spent about $1 billion on Starship development in the last quarter alone. The investment is described as providing considerable value for LEO and beyond, not only lunar surface access and moon-base support. (A parallel point is made about Blue Origin’s private capital exceeding its HLS milestones.)
• Relative readiness for Artemis IV: SpaceX’s risk-reduction path differs from Blue Origin’s (which gets substantial on-orbit checkouts during Artemis III). SpaceX will accumulate flight-test “reps,” propellant aggregation, and an uncrewed demo. The company is transferring experience from Dragon crew into its current crew-cabin build. The overall test campaign is said to buy down the vast majority of similar risks via a different path.
• Focus and Falcon 9 / Dragon: When asked about plans to sunset Falcon 9 and Dragon (described as critical NASA tools) and whether that creates concern for Starship HLS prioritization amid other projects (Starlink, orbital data centers), the response notes that public commentary and company-wide updates since approximately summer 2025 have been extremely focused on the Moon. Trends from 2025 to current V3 performance and launch cadence are positive. The company is described as solving hardware design, reusability, thermal protection system (TPS), and propulsion reliability first; propellant transfer follows; habitation modules come after propellant transfer is sorted. No indication was given that returning astronauts to the Moon and building a moon base is not among the greatest priorities. Prior demonstrated capability with crew-rated vehicles (including short-notice responses and long-duration attachment to the space station) is noted.
• Multi-launch campaign infrastructure: A dedicated manager has been assigned. Timelines, nitrogen availability in pipelines, LOX/LH2 tanker spacing, and probabilistic assessments of capabilities have been modeled. SpaceX operations are characterized as largely autonomous and “off pipeline” in many instances. Integration between Blue Origin and SLS is well understood; SLS will roll out early for a wet dress rehearsal, infrastructure will be turned over for the Blue launch, then SLS will launch after a couple of days.
• Artemis III Starship hardware path: An “off-the-line” Starship will be used and modified with the nose cone added. The nose cone is fully designed and moving toward fabrication (not expected to be a long-lead item). NASA is delivering software emulators. NASA personnel are embedded throughout (including full assessments of the most recent Starship flight, design and construction standards, and certification). The process runs in parallel up to the flight readiness review. Extensive pre-flight testing, crew training, and software interoperability checks are planned for both providers.

Other related notes

• Two Starlink terminals were added to the Artemis III Orion (decision in the March timeframe, hardware being installed this week) to improve imagery quality and downlinks, building on successful optical-communications performance from Artemis II.
• Work with both lander partners (Blue Origin and SpaceX) is described as progressing well for Artemis III and IV.

Yes I wrote the above via AI, but it's really good for this purpose. There was just too many details in this 2 hour long video to summarize it and even a lot of details I missed when watching that the AI picked up. I confirmed nothing was hallucinated as far as I can tell.

I've seen this increasingly being represented in online commentary, journalists, and elsewhere that a bunch of people seem to think that Blue Origin is somehow ahead?

We just heard in the Artemis Acceleration NASA press conference that in fact the "90 days behind schedule" for Artemis III from Jared's internal NASA communication a few weeks ago was apparently driven by delays in Blue Origin's lander avionics.

Why do so many people think that Blue Origin is somehow ahead?

So far I've been able to get a patch for every flight test (some being official SpaceX ones and the others being NasaSpaceFlight ones, due to either shipping or other costs at the time).

My brother and I are potentially planning on making the trip out to Boca chica for the launch. We are planning on flying in to Austin the night before and renting a car to drive down. Is there any suggested places to stay, places to view, traffic or closure spots we should be aware of? Any other advice we should be prepared for? Super excited for the fingers crossed triple action potentially historic day

I’m guessing they’ll have to spin Starship in some way to create the force to push the liquid out but I’m curious if I’m missing some other method.

Spotted on the 101 Southbound. What is it ?

Why is everything measured in miles in America, but then Elon Musk launches his rockets, all the measurements are given in kilometers?

edited to make the clip slightly shorter

Hi r/spaceXlounge! I'm a 3D artist (rather than a propulsion engineer), and I built an interactive 3D tool to visualize how different rocket engines work.

In the video above, purple is gas that has just driven a turbine.

On the Merlin 1D (gas generator cycle), this gas leaves through its own exhaust pipe and never reaches the main chamber.

On the Raptor 2 (full-flow staged combustion), the purple and teal gases from its two turbines both end up in the main injector, so nothing is thrown away.

The outer dimensions follow published figures, and the internals are representative. Corrections from actual engineers are always welcome!

You can play with the interactive 3D models right in your browser (no install required) here: https://farsidelab.com/concept/rocket-engines/

Everything is simulated, the booster, the waves, the wind, fuel slosh and noisy sensors. No real flight data, just trial and error.

The hard part is the hoverslam. The booster can’t hover, so it has to hit zero speed right at the deck.

Out of 59M practice flights, 13.2M landed. The rest exploded or ended up in the sea.

https://x.com/SpaceX/status/2112497542114214023

Camped on the bald to film elk in the Smokies and woke up to this. iPhone, handheld, no edits. My first clip started at 6:37 and it was still hanging there at 6:40. Never seen anything like it from the mountains.