Conversation

Notices

1. Embed this notice
   band@octodon.social's status on Thursday, 23-Nov-2023 22:24:24 JST band

   in reply to

   • David G. Smith

   @iDGS Project Gutenberg is a treasure in many ways.

   • Embed this notice
     David G. Smith (idgs@mas.to)'s status on Thursday, 23-Nov-2023 22:24:25 JST David G. Smith

     in reply to

     • 👩‍🦯The Blind Fraggle
     • Project Gutenberg

     @gutenberg_org Wow! And double-wow: Now *this* post (above☝️) has what I call amazing ALT text treasure!

     cc @Fragglemuppet

     #AltText

   • Embed this notice
     Project Gutenberg (gutenberg_org@mastodon.social)'s status on Thursday, 23-Nov-2023 22:24:27 JST Project Gutenberg

     Edwin Hubble's discovery, that the Andromeda "nebula" is actually another island galaxy far outside our own Milky Way, is 1st published in The New York Times #OTD in 1924.

     He identified extragalactic Cepheid variable stars for the 1st time on astronomical photos of Andromeda by using the 100-inch Hooker telescope. His measurement demonstrated conclusively that the distance of the Great Andromeda Nebula was an entirely separate galaxy located a significant distance from the Milky Way. #astronomy