published on: 2015-01-01 22:10:30
lazulicrime.tumblr.com/post/106801080378/
lazulicrime.tumblr.com/post/106815098748/
lazulicrime.tumblr.com/post/106902966713/
lazulicrime.tumblr.com/post/106959160673/
lazulicrime.tumblr.com/post/107118680408/
retrofutureground: Yerkes Observatory, Solar prominences around