Scientists are reconstructing the oldest known map of the night sky – long thought lost to time – by using X–rays to reveal its secrets. The map, which was created around 2,000 years ago, has spent ...

Researchers are painstakingly reconstructing the oldest-known map of the night sky – previously thought lost forever – by X-raying parchment that contains the star catalog hidden beneath other text.

In a monastery library on the Sinai Peninsula, a devotional handbook by the monk John Climacus sat quietly for centuries while a far older scientific treasure hid beneath its ink. Medieval scribes had ...