The Shroud of Turin

The Shroud contains bloodstains and a light outline of a man who underwent crucifixion. Some results place the shroud's origins between 300 B.C. and 400 A.D. Scientists cannot determine how the marks remain on the shroud for so many years. The Shroud of Turin has not been claimed authentic by the Catholic Church. The Shroud might be proof of the existence of Jesus Christ for non-Catholics. The Shroud of Turin might prove the existence of Jesus but as a Catholic myself, I believe in Jesus Christ (no matter what tests try to prove otherwise).
http://www.history.com/shows/the-real-face-of-jesus/articles/about-the-shroud-of-turin