Strange life-forms found deep in a mine point to vast 'underground Galapagos'
I think it's very likely that life has originated on Earth many times. If it happened once, so early in the age of Earth - it should happen more than once.<p>But the developed descendants of the first life outcompeted the later ones immediately so we only ever discover life that is related to us.<p>But if we search where life related to us couldn't go - maybe we'll find completely independent trees of life?