Birdwatch Note Rating
2024-12-23 16:45:36 UTC - NOT_HELPFUL
Rated by Participant: 0F676A639F86D6427380643792A319A4F90A52F629A52A0607FB06C2DC878027
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Original Note:
In space (at 550 km orbit) Mach numbers don't make sense as a measurement because they are defined as the ratio of an object's speed to the local speed of sound - and sound cannot propagate in the vacuum of space since there is no medium for sound waves to travel through. https://en.wikipedia.org/wiki/Mach_number
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