I asked that very question on Space.SE: https://space.stackexchange.com/question...

		dotancohen on June 7, 2024 \| parent \| context \| favorite \| on: Super Heavy has splashed down in The Gulf of Mexic... I asked that very question on Space.SE: https://space.stackexchange.com/questions/6256/why-were-jet-... The summary is that there isn't enough oxygen at the range of altitudes needed.