A new study of pieces of a meteorite that dropped into Canada's Tagich Lake in 2000 suggests more of the basic building blocks of life may exist in asteroids than previously thought.
Researchers studying various sections of the 22 pounds of material obtained from the meteorite have found different concentrations of organic compounds, sugars, and acids in the various sections. That kind of variety in one body was unexpected, and may strengthen the case for life arriving on Earth from elsewhere.
That theory has been around for a while now. That the current water supply on Earth was delivered by comets after the new planet had begun to calm down is probably generally accepted by scientists today, so the idea that life could have arrived in a similar fashion can't be ruled out-- especially given the affinity between Earth life and water. Pushing Genesis somewhere out into the cosmos is not intellectually or emotionally satisfying, however. We may never know for certain exactly where and how we got our start. It is science with a mystical edge.
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