So far, about 300 planets have been discovered in distant solar systems through special detection techniques. Boss estimates that, on average, each sun-like star has about one "Earth-like" planet.
He told BBC News, "Not only are they probably habitable but they are probably going to be inhabited.... I think that most likely the nearby 'Earths' are going to be inhabited with things which are perhaps more common to what Earth was like three or four billion years ago."
Recent studies at Edinburgh University suggest that there could be thousands of intelligent civilizations in space.
Perhaps those civilized beings look like the creature in the last Retro Picture Quiz post?
Source: BBC News
I've been reading a few books by Stephen Jay Gould. It seems that bacteria type fossils have been found in the oldest of rocks 3.5 billion years old.
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So it looks like life isn't just a freaky chance thing, more likely that, given the right circumstances life WILL arise.