If you read the NASA article, they did not find DNA in the meteorites, but they found Adenine and Guanine, which are PART of the bases on DNA, and is missing the Phosphate backbone of DNA. -- DNA has not come together outside of living things, either in space nor on earth. -- Only a portion of DNA. -- Go to NASA article at:
http://www.nasa.gov/topics/solarsystem/features/dna-meteorites.html.