An ancient star map (not the document analyzed in the new research) unearthed in Dunhuang, China, in the seventh century C.E. Public domain via Wikimedia Commons Thousands of years ago, Chinese ...

The Pawnee Star Chart is a series of crosses sprinkled around an oval piece of elk skin. Likely made in the early 17th century by the Skiri (also called the Skidi) band of the Pawnee Nation, the chart ...