An amazing piece of astronomy trivia that few people know is that in truth, only about ten percent of the universe is visible using conventional methods of observation. For that reason, the Hubble really was a huge leap forward. That is for the very simple reason that the Hubble can operate outside.
Karel van Mander, Howest University
Yes, ik wil alle tips ontvangen om mijn vuur krachtig te laten branden en vol energie door het leven te stappen!