How are there footprints without any moisture?
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The Claim:
People argue that a
footprint so distinct in shape could only be left in sand with moisture, and
since there is no moister on the moon, creating a perfect footprint such as
this is impossible anywhere but Earth.
The Explanation:
MythBusters tested with a substance similar to moon sand. They stated that the sand on Earth is very fine and weathered from the conditions here on Earth, however, that the sand on the moon is very course and sharp; this means that the sand would more easily stay together in situations where Earth sand would simply fall past one another. They tested this theory in a vacuum chamber as well, they put a space boot on the chamber with a mechanism that would cause it to step in the sample of sand. First they tested with Earth sand, and as expected, there was no foot print left behind, because Earth sand grains easily fall past on another. However, when they tested it with the moon sand, their results were a clear foot print left behind, without any moisture, because the grains of sand are much more sharp they cling onto one another maintaining the shape that was imprinted into them. In this case, the footprint was left behind.
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