Case file · Declassified record
Dunhuang star chart
A Tang-era paper scroll from the Mogao Caves maps more than 1,300 stars, the oldest complete star atlas known.
700 CE · 40.04, 94.81 · status: official
The account
Sealed in the 'Library Cave' and taken to London by Aurel Stein in 1907, the chart also carries cloud-divination texts, showing how sky-watching and omen-reading went together.