"Henry Spencer" <henry@xxxxxxxxxxxxx> wrote in message
> In article <dvabte$8r6$1@xxxxxxxxxxxxxxxxxxx>,
> al <almond@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>>>The moon, however, is dry, cool and mostly rigid, like a chunk of stone
>>>or iron. So moonquakes set it vibrating like a tuning fork. Even if a
>>>moonquake isn't intense, "it just keeps going and going," Neal says.
>>I thought that the density of the moon was less than the Earth? Like
> It's a simile, not meant to be taken literally.
>>How can he tell that the moon is dry subsurface?
> Because we've got plenty of bits and pieces from the subsurface,
> by impacts and mixed in with the rest. And *all* the lunar samples are
> dry as a bone -- drier, in fact.
> spsystems.net is temporarily off the air; | Henry Spencer
> mail to henry at zoo.utoronto.ca instead. |
More importantly, no hydrated minerals have been found.