Can anyone find the actual article on PNAS? The closest I can get is http://www.pnas.org/content/early/2011/08/04/1105715108.abst...

And this is the lab page, that also has no info on the paper.

http://astrobiology.gsfc.nasa.gov/analytical/index.html

This is one thing that consistently annoys me about most scientific journalism online, and about the press releases by institutions. Is it really that hard to post a link to the abstract page of the actual journal?

Thanks for the link. Makes me wonder, if life did come from space then we will have to start exploring space more seriously. The possibility of a aliens existing somewhere else cannot be ignored any longer.

This HN thread links to an article that describes the enormous difficulties in interstellar travel: http://news.ycombinator.com/item?id=2639456

Mind you... space exploration does not have to be interstellar. There are probably lots of interesting discoveries to be had here in our own backyard.