(Scientific American)
In the chaotic early history of the solar system, our planet was subject to intense bombardment by meteorites containing simple organic compounds. The young Earth could have also received more complex molecules with enzymatic functions, molecules that were prebiotic but part of a system that was already well on its way to biology. After landing in a suitable habitat on our planet, these molecules could have continued their evolution to living cells. In other words, an intermediate scenario is possible: life could have roots both on Earth and in space.
1 comment:
Is this what they call "panspermia"?
Are scientist serious when they suggest that life forms, or their primitive ancestors, could survive a fiery entry into the earth's atmosphere?
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