29 septiembre 2014
The pattern of nitrogen in biomolecules like proteins, which differ greatly from that seen in other parts of the solar system, could have been generated by the interactions of light from the early sun with nitrogen gas in the nebula, long before Earth formed.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/-bBmaaJUuj8/140929154539.htm
