is going to attempt this morning another launch of , at Boca Chica TX. They're targeting 8 AM EST / 7 AM local time.

(The April attempt ended in a big kaboom.)

You can watch live on the Spaceflight Now YouTube feed at:

youtube.com/watch?v=m-LFzFWaAC

Approaching T-10 minutes to the opening of the 20-minute launch window at 7 AM CST for the test flight of the , which by far is the most powerful rocket on Earth.

The last test in April went kaboom shortly after launch.

Watch live on Spaceflight Now.

youtube.com/watch?v=m-LFzFWaAC

From the feed ... They may hold at T-40 seconds due to boats down range refusing to leave the area.

(This is why SpaceX needs a fully armed submarine ...)

Here we go ... or not. They did go into a hold at T-40 seconds.

They're working a late pressurization problem on the upper stage.

Upper stage separation ... the first stage just blew up. Upper stage still going ...

The upper stage would have the passengers. If successful, this test version will belly flop into the Pacific Ocean ...

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Starship engine shutdown just short of orbital velocity, awaiting status update ...

Data lost from upper stage, Starship probably lost ...

It appears that the flight termination system (AKA auto-destruct) destroyed Starship just before it was to achieve orbital velocity and shut down the engines ...

Overall, a successful test. A successful test collects data to move forward. The first stage (Super Heavy) appears to have worked fine until after separation; it blew up as it began to attempt re-entry.

The upper stage (the crew vehicle) appears to have worked nominally until just before engine shut down and orbital velocity.

For a second test flight, a vast improvement over the April test.

@WordsmithFL
It will be interesting to find out the reason for the Starship termination.

@pendrag I was watching the velocity; orbital velocity is about 28,000 KPH and they were over 24,000, so it was close to shutdown. Usually an upper stage fails fairly quickly after engine ignition if something is wrong, so my strict speculation is maybe a software error. But I have a Poli Sci degree, so don't trust me.

@WordsmithFL
My thoughts are around the resulting negative G that would happen right at engine cutoff, if any extra fuel remained. I do not think there was any additional engine burns scheduled for Starship.
And I am not even close to being a rocket scientist. 😎

@pendrag @WordsmithFL I know a rocket scientist who married a brain surgeon. Really! They must know everything.

@poemblaze Me neither. I've seen nothing to indicate it has a crew escape system.

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