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Starship's Twelfth Flight Test
• SpaceXA live webcast of the flight test will begin about 45 minutes before liftoff, which you can watch here and on X @SpaceX. You can also watch the webcast on the X TV app. As is the case with all developmental testing, the schedule is dynamic and likely to change, so be sure to check in here and stay tuned to our X account for updates.
The upcoming flight will debut the next generation Starship and Super Heavy vehicles, powered by the next evolution of the Raptor engine and launching from a newly designed pad at Starbase.
Read about the upgrades debuting on Starship, Super Heavy, Raptor, and the launch pad on Flight 12.
The flight test's primary goal will be to demonstrate each of these new pieces in the flight environment for the first time, with each element of the Starship architecture featuring significant redesigns to enable full and rapid reuse that incorporate learnings from years of development and test.
Watch "Test Like You Fly", the first episode in a new Starship series that takes you inside the factories and onto the launch pads as these first vehicles prepared for flight.
The booster's primary test objective will be executing a successful launch, ascent, stage separation, boostback burn, and landing burn at an offshore landing point in the Gulf of America. As this is the first flight test of a significantly redesigned vehicle, the booster will not attempt a return to the launch site for catch.
The Starship upper stage will target multiple in-space and reentry objectives, including a payload deployment of 20 Starlink simulators, similar in size to next-generation Starlink V3 satellites, and two specially modified Starlink satellites. The two modified satellites will test hardware planned for Starlink V3 and will attempt to scan Starship's heat shield and transmit imagery down to operators to test 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. All of the deployed payloads will be on the same suborbital trajectory as Starship. A relight of a single Raptor engine while in space is also planned.
For Starship entry, a single heat shield tile has been intentionally removed to measure the aerodynamic load differences on adjacent tiles when there is a tile missing. Finally, the ship will perform experimental actions tested on previous flight tests, including a maneuver to intentionally stress the structural limits of the vehicle's rear flaps and a dynamic banking maneuver to mimic the trajectory that future missions returning to Starbase will fly.
Countdown
All Times Approximate
| 00:50:00 | SpaceX Flight Director conducts poll and verifies GO for propellant load |
| 00:38:53 | Ship LOX (liquid oxygen) load underway |
| 00:35:00 | Booster LOX load underway |
| 00:34:43 | Booster fuel (liquid methane) load underway |
| 00:32:59 | Ship fuel load underway |
| 00:21:30 | Raptor begins engine chill on booster and ship |
| 00:02:50 | Booster propellant load complete |
| 00:02:10 | Ship propellant load complete |
| 00:00:30 | SpaceX flight director verifies GO for launch |
| 00:00:17 | Flame diverter activation |
| 00:00:03 | Booster engine startup command |
| 00:00:00 | Excitement guaranteed |

FLIGHT TEST TIMELINE
All Times Approximate
| 00:00:00 | Liftoff |
| 00:00:45 | Max Q (moment of peak aerodynamic stress on the rocket) |
| 00:02:22 | Super Heavy MECO (most engines cut off) |
| 00:02:24 | Hot-staging (Starship Raptor ignition and stage separation) |
| 00:02:30 | Super Heavy boostback burn start |
| 00:03:30 | Super Heavy boostback burn shutdown |
| 00:06:34 | Super Heavy landing burn start |
| 00:06:59 | Super Heavy landing burn shutdown |
| 00:08:11 | Starship engine cutoff |
| 00:17:37 | Payload deploy demo start |
| 00:27:15 | Payload deploy demo complete |
| 00:38:37 | Raptor in-space relight demo |
| 00:47:47 | Starship entry |
| 01:02:29 | Starship is transonic |
| 01:03:08 | Starship is subsonic |
| 01:05:06 | Landing burn start |
| 01:05:08 | Landing flip |
| 01:05:17 | Landing burn 3 to 2 engines |
| 01:05:24 | Landing burn 2 to 1 engine |
| 01:05:26 | An exciting landing! |



