Through Distant Worlds and Times was written by an astronomer whose first fundamental contribution to global science was what?
Through Distant Worlds and Times: Through Distant Worlds and Times or Through Distant Worlds and Times: Letters from a Wayfarer in the Universe is a romantic scientific story written by Milutin Milanković, the Serbian mathematician, astronomer, geophysicist and climatologist, in the form of letters to an anonymous young woman. Milutin Milanković:  The first contribution is the "Canon of the Earth’s Insolation", which characterizes the climates of all the planets of the Solar system.
"Canon of the Earth’s Insolation"