Date: Fri, 20 Mar 2015 18:51:26 -0400
From: mark <whitroth at 5-cent.us>
To: undisclosed-recipients:;
Subject: [WSFA] Take me home, giant lava tubes, to the world where I belong...
Reply-To: WSFA members <WSFAlist at KeithLynch.net>

Excerpt:
Lava tubes large enough to house cities could be structurally stable on
the moon, according to a theoretical study presented at the Lunar and
Planetary Science Conference on Tuesday (March 17).

The volcanic features are an important target for future human space
exploration because they could provide shelter from cosmic radiation,
meteorite impacts and temperature extremes.

Lava tubes are tunnels formed from the lava flow of volcanic eruptions.
The edges of the lava cool as it flows to form a pipe-like crust around
the flowing river of lava. When the eruption ends and the lava flow stops,
the pipe drains leave behind a hollow tunnel, said Jay Melosh, a Purdue
University distinguished professor of earth, atmospheric and planetary
sciences who is involved in the research.
--- end excerpt ---

<http://spaceref.com/moon/huge-lava-tubes-could-exist-on-the-moon.html>

           mark