A roughly 3,000-year-old stone disk covered with enigmatic markings is actually an ancient celestial map marking the brightest stars in the night sky, researchers claim.
The tire-size stone, which was discovered near an ancient hill fort in northeastern Italy a few years ago, features 29 carved markings on its front and back that may represent the brightest stars in the night sky, researchers posit in a new study, published on Nov. 22 in the journal Astronomical Notes.
