"Doc" wrote in message
m...
Among all the hoopla surrounding the latest Mars explorer, what I
haven't heard is what this one will do that the previous ones didn't?

These rovers do real geology. The Vikings were looking primarily for direct
evidence of current life. The MERs are looking for geological evidence of
current or former life.

I also haven't seen a pricetag on the things. Anybody?

A small fraction of the Viking missions, in constant dollars. I vaguely
remember one sixth or less, but I could be off either way.


Jim McCauley