Scott Manley has already chimed in with his thoughts: Why Starship’s Booster Failed After Staging

It seems that several engines weren't just shutting down during the boostback burn, but were violently disassembling themselves. Possible cause could include propellant sloshing during the flip leading to inconsistent pressure fed to the engines/plumbing.

Jonathan McDowell trajectory analysis: https://nitter.net/planet4589/status/1725873032244195495#m

Based on the last altitude/velocity numbers on SpaceX's webcast, I estimate a Starship achieved trajectory of -1740 x 150 km with (if not entirely destroyed by the flight termination system) impact NE of the Turks and Caicos Is.

Those engines were beautiful

Wow, my skepticism about the engines was silly. There were a few moments during first stage where it I couldn't tell whether the exhaust was nominal, but may be nothing. (Edit: Nvm, I think it was just ice chunks)

Looks like there's some minor debris on the road near LabPadre's camera, but certainly no concrete storm!

Awesome launch!

This thread maybe? This thread definitely!

S25 and B9 are stacked and ready for a Saturday morning launch. The tank farm should start spooling up around 2 a.m. local time.

While we wait, Starlink 6-28 is currently scheduled for 2023-11-18 05:05 UTC. Webcast links in comment.

MECO! (most engines cut-off)

Hot staging!

Prediction time!

Stage Zero: Works with only minor damage.

Booster Engine Failures: 5 :(

Hot Staging: Works, looks cool.

Upper Stage: Flies, with significant issues.

FTS: Big boom, on time!

End result: Booster re-enters in one piece, Ship in many.

John Insprucker reports that the second stage may have been lost, likely triggered by AFTS.

SpaceX webcast ending now.

Why weren't there any onboard cameras during the Livestream?

Booster RUD!

Ship still looking good!

NSF are live: https://www.youtube.com/watch?v=uOI35G7cP7o

Tim Dodd's (Everyday Astronaut) stream is live: https://www.youtube.com/watch?v=6na40SqzYnU

Fingers crossed the "not a deluge system cause I didn't get a permit for one" works properly and the pad (and/or rocket) doesn't get torn up again.

Fuel loading has gone well so far!

It's hard to tell from ground cameras, but I'm wondering whether the booster flipped upsidedown after separation. Seems like it really rotated hard.

Starship trajectory nominal!

Acquisition of signal, Cape Canaveral.

Expected loss of signal, Houston. Ship terminal guidance.

SECO?

Awaiting acquisition of signal from Starship...

SpaceX live streaming starts at 12:24 UTC here: https://twitter.com/i/broadcasts/1dRKZEWQvrXxB

Power and telemetry nominal! All engines looking good so far!

https://nitter.net/NASASpaceflight/status/1725839751838658828#m

NASA's WB-57 is in the air and heading to Starbase to capture high-altitude footage of the launch.

https://www.flightaware.com/live/flight/NASA927

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

[Thread #17 for this sub, first seen 18th Nov 2023, 06:10] [FAQ] [Full list] [Contact] [Source code]

Vehicles queueing to leave the pad.

Police at the roadblock.

Ignition and liftoff!

Max-Q!

SpaceX are live: https://twitter.com/SpaceX/status/1725852544587727145#m

Hosted webcast has started. Kate Tice and Siva Bharadvaj are hosting.

Edit: And John Insprucker!

John Insprucker: Teams are not working any significant issues. Propellant load progressing well. Stages are pressurizing for flight. Booster prop load should finish around T-3 minutes. Still a few wayward boats in the area, but the countdown can be held at T-40 seconds if necessary.

Rapid recycle called. Countdown is holding at T-40 seconds.

Insprucker: Team is working a delayed pressurization issue.

Countdown has resumed!

John Insprucker: Wayward boats are clearing the area. TVC wiggles on booster have been completed.