A hunt for historical treasures led to a hidden chamber ... and the find of a lifetime.

This story is a collaboration with Biography.com. Nicolaus Copernicus developed a celestial model of a heliocentric planetary system, which he described in his landmark work De revolutionibus orbium ...

Using ground-penetrating radar, researchers discovered an underground chamber containing a 500-year-old compass near Copernicus’ burial site. The compass resembles the one often depicted with ...