Starship V3 Completes Launch Rehearsal, Targets May 19 for First Flight

Following an aborted rehearsal attempt on May 9, a fully stacked Starship V3 stood fully fueled on its launch pad in South Texas for the first time — and the countdown ran to completion.

SpaceX completed a wet dress rehearsal of its newest Starship variant on May 12 at the freshly built Pad 2 at Starbase, loading more than 5,000 metric tons of supercooled liquid methane and liquid oxygen into the largest rocket ever assembled. The test validates that the fueling systems, ground support equipment, and software can handle the thermal and mechanical stresses of an actual launch.

The message is straightforward: Starship V3 is not aspirational. It is launch-ready.

Taller Than Anything That Has Flown

At 408 feet (124 meters), Starship V3 is the tallest rocket ever built — roughly the height of a 40-story building, and about 45 feet taller than the Saturn V that carried Apollo astronauts to the Moon. It is a few feet taller than the previous Starship version. In its fully reusable configuration, the vehicle is designed to carry up to 150 metric tons of cargo to orbit, according to SpaceX.

The numbers grab attention, but the upgrades run deeper than dimensions.

What V3 Actually Changes

The vehicle features higher-thrust, more efficient Raptor V3 engines on both the Super Heavy booster and the Starship upper stage. The booster now carries three grid fins instead of four — each 50% larger and significantly stronger, with a new catch point and repositioned placement to reduce heat exposure during hot staging, according to SpaceX.

The hot stage itself has been redesigned: it is now integrated into Super Heavy and will not be discarded during flight, a concrete step toward full reusability. The fuel transfer tube, which channels cryogenic fuel to the booster’s 33 Raptor engines, has been completely redesigned and is now roughly the size of a Falcon 9 first stage. SpaceX says this enables all 33 engines to start simultaneously and allows faster, more reliable flip maneuvers.

The upper stage received what SpaceX describes as a “clean-sheet redesign of its propulsion system,” increasing propellant tank volume and improving the reaction control system for in-flight steering. V3 also includes propellant feed connections for off-Earth fuel transfer — the capability engineers must master before Starship can go anywhere beyond low-Earth orbit.

Flight Plan and What Comes Next

SpaceX is targeting May 19 for the first launch of Starship V3, with a 90-minute window opening at 6:30 p.m. EDT from Starbase.

The mission profile — Flight 12 overall for the Starship program — will send the upper stage eastward on a suborbital trajectory. About 17.5 minutes after liftoff, the vehicle will begin deploying 22 dummy Starlink V2 satellites. Ship will relight one of its six Raptor engines in space before splashing down in the Indian Ocean approximately 65 minutes after launch, according to SpaceX’s mission description.

Super Heavy will not attempt the return-to-launch-site catch that SpaceX has pulled off on previous flights. Instead, the booster will steer to a soft splashdown in the Gulf of Mexico — a conservative choice for a redesigned vehicle on its first flight.

The test also marks the debut of Pad 2 at Starbase, which features faster fueling capabilities and shorter booster-catching arms.

The Bigger Picture

Starship V3 arrives after a seven-month gap since the last Starship flight in October 2025, which went entirely according to plan. That downtime was spent building a new launch pad and a substantially new vehicle — an iterative cadence that has become SpaceX’s signature, and one that is producing results on a timeline that has surprised even close observers of the program.

If V3 performs as intended, the next steps sharpen into focus: in-orbit refueling demonstrations, satellite deployment at scale, and eventually the crewed lunar landings planned under NASA’s Artemis program. SpaceX has not published revised timelines for those milestones. But a successful Flight 12 would turn the critical refueling capability from a future goal into a near-term test objective — and that is when Starship stops being a test program and starts being a transportation system.

Sources

Once again, SpaceX has set a new record for the tallest rocket ever built — Ars Technica
SpaceX’s Starship V3 megarocket finally has a debut launch date. Here’s when it will fly — Space.com
SpaceX’s Starship V3 rocket completed its launch rehearsal — R&D World

Discussion (10)

kevin_p

so is the may 19 launch going to orbit or just suborbital? article says suborbital but that seems like a waste of the biggest rocket ever built. just go to orbit already

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grumpydad1958

Back when Apollo was flying, we built the Saturn V in a few years and went to the moon. Now it takes seven months between test flights and everyone acts like that's fast. I'm not saying it isn't impressive, I'm just tired of everyone being impressed by everything all the time. The Saturn V was 363 feet. This thing is 408. Forty more feet and a whole lot more paperwork, that's what fifty years gets you.

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oldsalt77

old man yells at rocket

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vkrishnan

The propellant feed connections for off-Earth fuel transfer are arguably the most significant detail buried in this article. In-orbit refueling is the single hardest unsolved engineering problem standing between Starship and any meaningful beyond-LEO mission. The fact that V3 physically incorporates those connections suggests SpaceX is treating this as a near-term test objective, not a future upgrade path. For context, NASA's own OIG analysis estimated that a fully fueled Starship in lunar orbit would require on the order of 10-14 tanker flights. Each of those needs to work reliably. That's the operational scale they're building toward, and it's worth keeping in mind when reading about a single suborbital test.

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sarahmitchell

this is wild

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marcus_t

The article says 'more than 5,000 metric tons' of propellant loaded. The V2 was roughly 4,600 metric tons combined across both stages. That's roughly an 8-9% increase. Anyone know if this comes from the upper stage tank volume increase mentioned in the 'clean-sheet redesign,' or is it mostly from the redesigned fuel transfer tube enabling better utilization? The article mentions both but doesn't break down the contribution of each.

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Good question. The upper stage redesign did increase tank volume slightly, but the bulk of the propellant gain comes from the new fuel transfer tube and improved engine efficiency letting them fill closer to the structural maximum. The Raptor V3's higher chamber pressure lets them run closer to stoichiometric, which partially offsets the additional dry mass from the beefier infrastructure.

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Dave_Welding

Man I live like 20 minutes from Boca Chica and I'm taking off work on the 19th. Saw the last booster catch from my backyard and nearly fell over. If anyone's driving down for this one there's a good taco truck on HWY 4 that sets up near the viewing area. Get there early tho cause it gets packed.

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definitely_not_a_bot

Lmao "Carl Sage" you can tell this whole article was written by chatgpt. No human writer uses the phrase "the message is straightforward" like that. Also "a concrete step toward full reusability" — who talks like this? Be real.

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ChenWei88

The fact that they're NOT attempting a catch on the first V3 flight is actually the smartest thing here. Everyone's been screaming that SpaceX moves too fast and skips steps. This is them not skipping steps. They'll catch it on flight 13 or 14 once they have data on the new grid fins and the redesigned hot stage. People have short memories.

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