Space/Science — HabitableZone

Space/Science » in reply to It's happened here on Earth.

re: Bad Logic.
Chris Vancil — (archived)

There is a big difference between a theory of how metals came to be on Earth and suggesting that this is also how similar materials will be found on the Moon. They are two very different places.

The Earth has had far less impacts at high speed by several dozen orders of magnitude. Because we have a dense atmosphere most smaller meteorites don't make it to the surface as anything but dust. We have a water table to absorb much of the shock and soft surface materials. The Moon is like a concrete wall and the Earth like a padded wood wall.

Besides the Moon has had billions of years of impacts of various sizes, at all kinds of angles and speeds. On the Moon your best bet would be "fresh" impacts. But, there are many different types of space rocks. Not all are metals or minerals rich.

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