1. Scientists confirm that parts of earliest genetic material may have come from the stars

Comment #193506 by Veldrik on June 15, 2008 at 6:03 pm

Carbon-rich meteorites, carbonaceous chondrites, contain many biologically relevant organic molecules and delivered prebiotic material to the young Earth. We present compound-specific carbon isotope data indicating that measured purine and pyrimidine compounds are indigenous components of the Murchison meteorite. Carbon isotope ratios for uracil and xanthine of δ13C = 44.5‰ and 37.7‰, respectively, indicate a non-terrestrial origin for these compounds. These new results demonstrate that organic compounds, which are components of the genetic code in modern biochemistry, were already present in the early solar system and may have played a key role in life's origin.

3. Comment #192675 by randumbness47 on June 13, 2008 at 10:30 pm
"The analysis shows that the nucleobases contain a heavy form of carbon which could only have been formed in space. Materials formed on Earth consist of a lighter variety of carbon. "

I'd like to know more about this. What prevents the heavier carbon to form on Earth, or allows it to form only in space?

Buy the full article, (come on, it doesnt cost to much).

Carbon 13 is from plants. It does NOT come from space. Photosynthesis occasionally breaks up the nitrogen and it becomes a form of carbon. about 99% of the time its carbon 13, and much smaller than 1% it's carbon 14. If you blast an area of plant life (or nitrogen) with enough radiation, you get a heap of carbon 13 and carbon 14 isotopes.
All the rock had to be was hot and bright and it would have broken up the nitrogen quite happily.
The article is from a bunch of uni people in the college of london in a journal, where they based it upon

ok, on second thoughts dont buy the article. Stating that large amounts of carbon 13 present from an object that enters the earth at a high velocity and high temperature, MIGHT possibly mean that the article isn't worth the $13.50 they charge. :o)

However the funding may pay for the students and research professor to take up biology as an elective and learn where carbon 13 comes from and how it's naturally made.