Mars Exploration Rovers Update - February 13, 2004

February 15, 2004

George wrote:

If...they...are...ancient...I ...would...not...expect...some..to
be...pristine.


Why? Very little aside from wind is occuring that can alter anything on
the surface. It certainly doesn't rain. And any frost action is extremely
limited in scope and intensity. The surface of most of the planet has been
left unaltered, except for wind effects and the occasional meteor impact,
for perhaps billions of years. The landscapes you are seeing at both sites
are very, very old.

That is absurd. If that were the case, the cratering would be much more uniform
planet wide. There is wide scale evidence of surface subsidence via ice removal
and water outflow almost everywhere on the planet. That almost certainly has
modified the surface.

You are an idiot, crackpot. Give it up.

Thomas Lee Elifritz
http://elifritz.members.atlantic.net