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Meteors, Asteroids and Comets
delivery
05/23/09

 

This is an artist's concept of asteroids delivering amino acids to Earth. The jagged white line at the bottom of the image is the actual data from the analysis of the Murchison meteorite. The two largest peaks are the amounts of right-handed and left-handed versions of the amino acid isovaline. Note that the highest of these two peaks is the amount of left-handed isovaline, revealing an excess of the left-handed variety in the meteorite.
Credit: NASA/Mary Pat Hrybyk-Keith



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