By comparing his complete star chart with more fragmentary measurements ... Reversing time, they wound the stars of the Corona Borealis back to the year when the luminaries shone in the sky ...

Chinese scientists analyzed astronomer Shi Shen’s record of the stars and found it to predate previously known Greek ...

is now considered the oldest star chart in the world. Later observations written into the catalog showed inconsistencies with Shi’s findings. This was because of Earth’s shift on its axis ...

The Dunhuang map (not the chart studied in the new research) is an early star map from China dating to the Tang Dynasty (A.D. 618 to 907). | Credit: CPA Media Pte Ltd via Alamy The oldest star ...