Today I learned on Nostr: TIL that only 100 years ago, we (humans) thought that the "Milky Way" and the ...

TIL that only 100 years ago, we (humans) thought that the "Milky Way" and the "Universe" were the same thing, until Edwin Hubble determined that there were "other" galaxies.

https://en.wikipedia.org/wiki/Edwin_Hubble#Universe_goes_beyond_the_Milky_Way_galaxy
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1irx81l/til_that_only_100_years_ago_we_humans_thought/