MarsPhoenix
says
TEGA and MECA instruments detected calcium carbonate--the same stuff of chalk & antacids. On Earth it's an indicator of a liquid water past.
Happibun =:x
thinks
That is very exciting.
Gwenny
says
yes, it is
phoenixbird
says
all this talk about water... associated with Mars... fondly reminds me of one great novel that introduced the concept of "Water Brothers".
that is really interesting 