"jonathan" wrote in message
...

" George" wrote in message
. ..

If they're ancient I wouldn't expect the spheres to show a diversity
of condition, some badly broken, some very pristine. The Spirit
site looks ancient, this just doesn't to me.

Am I missing something here? What pictures are you using to come to
that
conclusion? If you look at this very close-up image, you will see
spheres
in a range of conditions, from almostr pristine to pitted and broken:



Yes, reading comprehension. I'll speak more slowly this time.

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.