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mfb- t1_j9j9jo1 wrote

The X-15 and SpaceShipOne reached space, if we count them then the answer is (pretty trivially) yes.

For non-rocket flight we are looking at the 25-40 km region. In principle the sound waves still have a non-zero amplitude at 100 km, increasing the chance to go above for some molecules beyond briefly, but that's a mathematical result without practical relevance.

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