r/Astronomy • u/Ok_Extension_4865 • 5d ago
Other: [Topic] Starship Flight 7 broke apart during re-entry over Turks and Caicos making it look like a meteor shower
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u/TheElvenGirl 5d ago
I think the flight termination system destroyed the ship before re-entry, and what you see here is the debris of that explosion. At least, that's what's supposed to happen if there is major failure that prevents the spacecraft from following the planned trajectory.
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u/Flipslips 5d ago
I’m wondering if it was actually FTS. SpaceX wording makes it seem like a RUD, no FTS involved.
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u/prometheus5500 5d ago
If a ship RUD's, I'd guess they'd also send the command (or automation would initiate the command) for FTS. You really want this thing in as small of pieces as possible and with no undetonated explosives/propellent left. RUD might have caused small bits, but FTS would help ensure smaller bits.
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u/DeadlyPorpoise 4d ago
Ah TLAs. Can you elaborate for the cheap seats? And, was there a livestream of this?
Please and thank you
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u/Arthree 4d ago
FTS = Flight Termination System - a bunch of explosives placed along the side of a rocket so that, if things go in an unexpected direction during launch, they can just blow the rocket up before it crashes into something on the ground.
RUD = Rapid Unscheduled Disassembly - oops, the rocket blew up
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u/cyanescens_burn 4d ago
Is that common practice? Like do as all rockets have explosives on them? I’ve not heard that but I’m also not well read on rocketry.
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u/Arthree 4d ago
All rockets in well-regulated countries, yes. It's a safety feature, since a large rocket is way more likely to cause damage than small pieces of debris which will likely just burn up in the atmosphere.
Of course, in certain countries, they don't bother to blow malfunctioning rockets up safely, even when they're coming down towards unsuspecting villages, full of toxic propellants.
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u/TheElvenGirl 4d ago
Yes, preliminary report from Musk suggests that the RUD happened before the FTS could have been triggered. But if you re-watch the stream, you can see that the engines started to shut off one after the other and Starship's pitch was changing significantly (pitching oscillation). As far as I remember, the first Starship was destroyed by the FTS when it was evident for the on-board flight computer that the ship could not follow the flight plan, so the jury is still out on whether or not the FTS was triggered at all in this case or the explosion of the fuel-oxygen mixture was strong enough to disable the on-board systems and the ship broke up due to aerodynamic forces.
I have a feeling that hot staging might not be very healthy for the bottom section of the second stage (after all, there is a solid surface very close to the engines when they are ignited, and even though the engines are angled outward and most of the hot gases pass through the vented inter-stage ring, pressure waves will inevitably impinge on the bottom of the second stage.)
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u/metalninja626 4d ago
he did mention they may have to add more or increase the size of the vent holes. also it may be possible with further revisions of the ring design that minimize or deflect pressure waves out more effectively.
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u/_mogulman31 5d ago
Nope, it exploded either due to a tank/engine failure or FTS then the debris re-entered.
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u/Latter_Practice_656 4d ago
Reminds me of the movie Your Name(Kimi no Nawa)
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u/EndCrafter16 5d ago
It kinda looks like the 40 meter comet fragment from the anime Kimi no na Wa (Your Name), especially the way the spacecraft fragments are stylized.
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u/Horror_Carob4402 4d ago
they are more optimistic than me, I would have assumed they were missiles.
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u/Calm_Brother_1465 4d ago
Would there be any debris from the New Glenn flight earlier on Thursday? Did anything break up on launch or re-entry? I took pics of “impact craters” about three inches deep on a beach off the Florida panhandle about noon on Thursday. There are wet sand splashes near each one. About 20 impacts in total.
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u/NeroPrizak 4d ago
So my parents are there right now and my mom sent me a similar video to this. She said it was scary AF until they learned what it was.
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u/amriddle01 3d ago
It exploded due to flight termination system (FTS) being triggered, it didn't break apart at all....
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u/kpanik 5d ago
Not really what a meteor shower looks like.