I think "Proof (that we) Possibly" kinda sums it up. This is "Proof" that there is a possibility (does not rule it out). He's being down voted because people are splitting hairs about the wording. What he said was generally correct however the word "proof" has a strong pull in one direction.
"Proof we possibly" is an oxymoron, like "60% of the time it works every time." It's not so much splitting hairs as it is attempting vainly to understand phrasing that inherently makes no sense.
I agree it was bad phrasing, that was not my point. I was simply pointing out that even though his wording was bad what he was trying to get across (Proof that is's still a viable hypothesis) was technically correct. Here i'll fix it for you "This is proof that that DNA can survive re-entry from space, due to this finding there is still a possibility that life came from somewhere else"
edit oh, grow up, downvoters. panspermia is a real concept http://www.livescience.com/13363-7-theories-origin-life.html