Live and recent posts from across the Fediverse tagged #harlowshapley, aggregated by home.social.
#harlowshapley
Isole cosmiche
https://edu.inaf.it/rubriche/risate-spaziali/isole-cosmiche/
Spirali esotiche
#EdwinHubble #galassie #GreatDebate #HarlowShapley #HeberCurtis #universo #ViaLattea
