earlier my colleague natalie l allen spoke with lisa bloom about what this evidence can be. >> o.j.for this double murder, even if there is dna on this knife, even if he stood up in the middle of times square and said, i did it, even if a witness came forward, he's already been tried, acquitted. it's over. this does not matter in terms of his legal jeopardy. but in the eyes of the country, it could be very significant. >> he's in prison right now on another charge. if something were to come out of this knife investigation, could that, perhaps, keep him in prison longer? >> well, that's a very good question. and the answer is, yes. so, o.j. is up for parole for the burglary and kidnapping charges he's incarcerated for. when he goes up for parole, parole casts a very wide net and people are entitled to come in and tell the parole board why he should be released and reasons why he should remain incarcerated. >> at this point the forensic team has yet to announce any findings. >>> you're watching "cnn newsroom." u.s. astronaut scott kelly came back home to hugs, to beer, to apple pie. m