1. Scientific studies of the tilma of Guadalupe have found several inexplicable phenomena, including living human characteristics like eye movement and body temperature, as well as images too small to be seen by the human eye. 2. The stars depicted on the Virgin's mantle accurately reflect the constellations visible in Mexico on the date of the reported miracle in 1531. 3. After nearly 500 years, the cloth remains intact despite being made of a material that normally deteriorates within a few decades.