Skies of blue
In the early 1800s, in the city of Suzhou in eastern China, two striking large-format maps were printed in vivid Prussian blue. One map depicted the terrestrial world of the Qing empire, the other, shown below, depicted the heavens. Look closely and you can see the curve of the Milky Way.
via @knowablemag.bsky.social
leventhalmap.org/digital-exhib…
Books about Ancient Astronomy at PG:
gutenberg.org/ebooks/subject/1…
#Books #Science #Astronomy
Project Gutenberg offers 78,563 free eBooks for iPhone, iPad, Kobo, Android and Kindle.
Project Gutenberg