The Shroud of Turin

The Shroud of Turin is a length of linen bearing the faint, full-length front-and-back image of a man who appears to have been scourged and crucified. For believers it is the burial cloth of Christ; for skeptics it is a medieval artwork. It is almost certainly the most intensively examined object in the history of religious relics.

The Image

What keeps the case alive scientifically is the image. The 1978 STURP examination concluded that the image is not a painting: there is no detectable pigment or binder forming it, the discoloration is confined to the topmost fibers, and it behaves like a dehydration-and-oxidation of the linen itself. No one has convincingly reproduced all of its properties with a known medieval technique.

The Date

What weighs against a 1st-century origin is the 1988 radiocarbon dating. Samples went to three independent laboratories — Oxford, Arizona, and Zurich — which agreed on a date of roughly 1260–1390 AD. The result was published in Nature in 1989. This places the cloth in the medieval period, consistent with its first undisputed appearance in 14th-century France.

The Dispute

Defenders of authenticity argue that the corner sampled was a later, rewoven repair — "invisible mending" — that would skew the result younger. Raymond Rogers reported chemical differences in that region in 2005. Critics counter that the repair hypothesis is not supported by photographic and weave evidence and has not been confirmed on fresh, controlled sampling.

Two Facts, Opposite Directions

The strongest argument for authenticity is the image: superficial, no detectable pigment, not yet reproduced by any proposed method. The strongest argument against is the date: three independent labs, published in Nature, medieval result. An honest assessment does not pretend the radiocarbon result away, nor does it dismiss the unresolved image as obviously faked. The probability that this is an authentic first-century shroud with a supernaturally formed image is low — held down by the dating — but the open questions about the image keep it from zero.