Convergent Evolution and Alien Life

Originally posted by Encoded05
But the fact that we have found martian life in the form of insects (wonder why it wasnt gobally recognised, but some papers covered it) throws the whole new scientist mars theory off.

That is quite a claim. Let's see the evidence.

reply to post by yeti101


"is tech intelligence a convergent feature of evolution? The answer is a resounding no, its happened once in 2 billion years out of billions of species nature just doesn't seem very interested in intelligence."

How do you know it happened only once here on earth? Estimates suggest that if a civilization like our own died, it would take about 50,000 years for the earth to make almost all clues to it disappear. Life has been around for, again by estimates, about 3 1/2 billion years, give or take. A civilization could have existed for a full billion years and still leave 2 1/2 billion years for all traces to be obliterated. Or there might have been cycles of new civilizations, then they go poof, and eventually a new one comes along every hundred million years or so. Who knows? Maybe our visitors are just here checking out the old homestead.

Ian