https://pinboard.in/u:joostvanderborg/public/ recent bookmarks from joostvanderborg 2014-01-01T19:29:47+00:00 http://www.slate.com/blogs/bad_astronomy/2014/01/01/moon_and_andromeda_relative_size_in_the_sky.html joostvanderborg fotografie astronomie https://pinboard.in/ https://pinboard.in/u:joostvanderborg/b:eecfb0b07ead/ 2011-07-24T21:24:43+00:00 http://www.flickr.com/groups/astrometry joostvanderborg fotografie astronomie https://pinboard.in/ https://pinboard.in/u:joostvanderborg/b:a984050f2afd/ 2009-05-17T19:35:29+00:00 http://theonlinephotographer.typepad.com/the_online_photographer/2009/05/sic-transit.html joostvanderborg fotografie zon astronomie spaceshuttle https://pinboard.in/u:joostvanderborg/b:6b94b3749666/