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More asteroids could have made life's ingredients
Date:1/19/2011

d amino acids as well.

One possibility is radiation. Space is filled with objects like massive stars, neutron stars, and black holes, just to name a few, that produce many kinds of radiation. It's possible that the radiation encountered by our solar system in its youth made left-handed amino acids slightly more likely to be created, or right-handed amino acids a bit more likely to be destroyed, according to Glavin.

It's also possible that other young solar systems encountered different radiation that favored right-handed amino acids. If life emerged in one of these solar systems, perhaps the bias toward right-handed amino acids would be built in just as it may have been for left-handed amino acids here, according to Glavin.


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Contact: Bill Steigerwald
William.a.steigerwald@nasa.gov
301-286-5017
NASA/Goddard Space Flight Center
Source:Eurekalert  

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