[meteorite-list] Mars Meteorite Similar to Bacteria-Etched Earth Rocks

[MexicoDoug at aol.com]

Martin Fisk wrote:

<< "There are two possible explanations," he added. "One is that there is
 an abiotic way to create those tunnels in rock on Earth, and we just
 haven't found it yet. The second possibility is that the tunnels on
 Martian rocks are indeed biological in nature, but the conditions are
 such on Mars that the DNA was not preserved." >>

There most likely are plenty more than two possible explanations...
*A third hypothesis might be that there is an abiotic way to create those 
tunnels on Mars to look for.
*A fourth is that hypothetical life on Mars has or had a non-DNA "biology".
*A fifth, that the hypothetical organisms migrated and devoured the reputed 
Nakhla dog in a instantaneous feeding frenzy creating another mystery.
*A sixth is that the meteoroid picked up their rock eating "bacteria" in 
space after collision with a hypothetical earth meteoroid containing a then 
famished colony of rock-eating bacteria from earth, but the Martian rocks were 
poisonous and killed the bacteria after a few generations, though not before the 
last surviving bacterium necro-cannibalized all the old DNA in a last survival 
effort...

Saludos, Doug