Re: Lunar rilles

On Sep 20, 4:34 pm, "Jeff Findley" <jeff.find...@xxxxxxxxxxxxxx>
wrote:
"Frogwatch" <dboh...@xxxxxxxxxxxxxx> wrote in message

news:1190318362.612676.17120@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

If they are lava tubes, I am surprised we have not seen such a "gaping
mouth" on images from various orbiters because many of them stop and
start in a way that should produce such

If the US does return to the moon, this would be an interesting surface
feature to investigate in person.

Jeff
--
"They that can give up essential liberty to obtain a
little temporary safety deserve neither liberty nor
safety"
- B. Franklin, Bartlett's Familiar Quotations (1919)

My primary interest here is that being a caver, the idea of exploring
huge lava tubes on the moon is wonderful to me. Unfortunately, on
further consideration, I just do not think they are really lava
tubes. If they are, they would be ideal traps for volatile materials
deposited by comets.

.

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