They found that the ancient star chart actually dates to 355 B.C. — 250 years earlier than previously thought — and that it was later updated around A.D. 125. This would make it the oldest-known star ...

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

IN this chart the whole sky is shown on a large sheet in three sections'one equatorial, Mercator projection, and two polar maps. The stars, which are graded in size according to magnitude ...

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 chart also provides pointers for the unknown ... matter so—just as dotted lines of equal density connect atoms and stars—could the densities of galaxies tell us something about the ...

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 ...