Alexander Keith Johnston, Atlas of astronomy, 1855. Herschel’s section of the Milky Way. Edinburgh/London.
Via LHL digital.
Discovering that the world was also round meant the people could use the system of celestial coordinates to describe points on Earth. The tricky thing was using astronomy to work out exactly where one must be. After all, the sky moved, and the Earth didn’t.
The beginning of the universe, for beginners - Tom Whyntie (by TEDEducation)
Mars in a Minute: How Do You Get to Mars?