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Comment by secondcoming

> “Or traveling at speeds that exceed the sound barrier without a sonic boom.”

Physics noob here so be gentle. I initially thought that the sonic boom is caused by the compression of the sound of the aircraft's own engines, but then realised that couldn't be correct as meteorites can also create sonic booms and they have no engines.

The boom is caused by the air being compressed in front of the object? Is the loudness of the engines irrelevent to the intensity of the boom, it's all due to speed?

So these sonic boom-less aircraft - if they're real - must be doing something to the air in front of it?

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