Space & Astronomy
Did we all originate on Mars ?
By T.K. Randall
March 26, 2011 · 32 comments
Image Credit: NASA
One theory suggests that life on Earth developed from organisms that arrived here from the planet Mars.
Its not a new idea and is one backed as a possibility by many planetary scientists. A long time ago the atmosphere of Mars was a lot more like that of the Earth than it is today and in that time over a billion tons of rock has traveled from Mars to the Earth providing a means with which organisms could have been carried from one to the other.
If we are descendants from Mars, there might be important lessons to be learned about our own biological origins by studying biochemistry on our neighbor planet, where biological traces erased long ago here on Earth might have been preserved in the Martian deep freeze.
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