alt Hacker NewsSeveral times the speed of sound? That is meaningless when there is no media for the sound waves. I think a better unit might be furlongs per fortnight.
Replies
hgoel • yesterday at 10:42 PM
"several times the speed of sound" is obviously just meant to mean really fast to earthlings in relation to their speed of sound.
jghn • yesterday at 10:51 PM
What about giraffe lengths per second?
sandworm101 • yesterday at 11:05 PM
Well, there is a speed of sound on the moon. Sound does travel through the regolith. If you were standing on the moon you would indeed "hear" this impact as the sound moved up through your feet. It would sound/feel like standing beside a subwoofer.
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From TFA:
> 2.43 kilometers a second, or 1.51 miles a second, or 5,400 miles an hour, or 8,700 kilometers an hour.
> There is, of course, no air and no sound on the Moon, so a "Mach number" doesn't really make sense. But if there were air, the speed would be about Mach 7, seven times the speed of sound.