Well folks, it’s time for the first reflight of a SuperHeavy booster!
Third time’s the charm for Starship version 2?
| Scheduled for (UTC) | 2025-05-27 23:30 |
|---|---|
| Scheduled for (local) | 2025-05-27 18:30 (CDT) |
| Launch Window (UTC) | 2025-05-27 23:30 to 2025-05-28 01:00 (90 minutes) |
| Launch site | Pad A, SpaceX Starbase, TX, USA. |
| Booster | B14-2 |
| Ship | S35 |
| Booster landing | Soft water landing in Gulf of Mexico |
| Ship landing | Indian Ocean |
Webcasts
| Stream | Link |
|---|---|
| Space Affairs | https://www.youtube.com/watch?v=YOJKZYSOsGs |
| Everyday Astronaut | https://www.youtube.com/watch?v=T6tP0il4z64 |
| Spaceflight Now | https://www.youtube.com/watch?v=okOzxHN9NOA |
| NASASpaceflight | Stakeout stream, Launch stream |
| LabPadre | https://www.youtube.com/watch?v=gr7P1Lrom5A |
| The Launch Pad | https://www.youtube.com/watch?v=jxvw_fDSFc0 |
| VideoFromSpace | https://www.youtube.com/watch?v=0_z8ZjExrVI |
| SpaceX | https://x.com/SpaceX/status/1927498623157198920 |
| The Space Devs | https://www.youtube.com/@thespacedevs/videos |
Stats
Sourced from NextSpaceflight and r/SpaceX:
☑️ 1st reflight of a Super Heavy booster
☑️ 131 days and 53 minutes turnaround for this booster
☑️ 3rd launch of Starship version 2
☑️ 3rd Starship Full Stack launch this year, 9th overall
☑️ 3rd launch from Pad A this year, 9th overall
☑️ 82 day turnaround for this pad
☑️ 66th SpaceX launch this year, 515th overall
Mission Details 🚀
Flight 9 features the first reflight of a Super Heavy booster, Booster 14, which previously launched Flight 7. Of the 33 engines on the booster, 29 are flight-proven.
Unlike the previous four launches, Booster 14 will not attempt a catch at the launch tower and will be used to test several experiments, including controlling the booster flip direction, a more efficient high-angle-of-attack booster return, and engine-out capability during the final 3-engine landing burn.
SpaceX website (current, archive)
- Ship objectives include deployment of 8 Starlink simulators, an in-space Raptor relight, and testing of Ship ver2 heatshield and flap design on reentry.
- “Following stage separation, the booster will flip in a controlled direction before initiating its boostback burn. This will be achieved by blocking several of the vents on the vehicle’s hotstage adapter, causing the thrust from Starship’s engines to push the booster in a known direction. Previous booster flips went in a randomized direction based on a directional push from small differences in thrust from Starship’s upper stage engines at ignition.” Diagram by Killip.
Link to Starship Dev thread
So excited, thanks for the juicy details! You make it so easy to be a Starbase nerd
Glad you find it useful!
Jessie Anderson confirms that Raptor #314 is on this booster. This will be the engine’s third flight, as it flew on Flight 7 (B14’s first flight), and Flight 5 (B12).
Hotstaging and ship engine ignition!
Ship passing through 70 km. Still getting telemetry and intermittent video. Lots of plasma!
Looks like loss of contact with the ship. Last telemetry was at T+46:51, altitude 59.3 km, speed 24482 km/h.
Sounds like it is a GSE issue this time. Still holding at T-40 seconds.
Nominal boostback burn. Ship engines still healthy.
Countdown clock has resumed!
SpaceX webcast has started. Dan Huot and Jessie Anderson are hosting.
Edit: Chris Gebhardt is also hosting.
Update: Ship is spinning again…
Edit: Loss of attitude control confirmed :(
S35 sprung a leak in some of the fuel tank systems. Engine relight test is cancelled.
Reentry will still happen since this is a suborbital trajectory. Should look similar to the reentry seen on Flight 3, which also had a loss of attitude control.
Reentry will start around T+47 minutes.SECO-1 confirmed!
Edit: And nominal orbit insertion! Next up, Starlink simulator deployment scheduled for T+18:26.
Expected hold at T-40 seconds for additional checkouts on one of the booster raptors.
Edit: They are apparently waiting for the engine temperature to reach the desired range.
Passed through Max Q, all booster engines look healthy.
The ship still seems to be venting a considerable amount, and is also slowly spinning… I hope they haven’t lost attitude control of the ship.
Edit: Ship attitude seems to have stabilized now.
Glad it wasn’t just me. That seemed like a ton of venting.
Payload door was unable to open fully. No Starlink simulator deployment on this flight.
Next up will be the in-space raptor relight at T+37:49.
Relevant spaceflightmemes post: https://sh.itjust.works/post/38958595
