methane
A colleague has pointed out recent Martian spectral results from the Mars Express spacecraft that indicate the presence of methane in the Martian atmosphere... whether due to cometary fragments, life, or as a side effect of past volcanism. See http://mainlymartian.blogs.com/ for more.
no subject
no subject
I did rather find the part about the Beagle's lithobraking humorous, in a sad way.