[Moonman62]

Good question. The following is from the article:

At the urging of a local bishop, scientists began searching in 2004 for the astronomer's remains and eventually turned up a skull and bones of a 70-year-old man — the age Copernicus was when he died. A computer reconstruction made by forensic police based on the skull showed a broken nose and other features that resemble a self-portrait of Copernicus.

In a later stage of the investigation, DNA taken from teeth and bones matched that from hairs found in one of his books, leading the scientists to conclude with great probability that they had finally found Copernicus.

[Lorica]

thanks!