In ogni Osservatorio che si rispetti, occorre…..OSSERVARE,
fatelo anche voi !

http://www.youtube.com/watch?v=Xv3i_xxcIdk
http://www.youtube.com/watch?v=qdJHUSAwU_Y
http://www.youtube.com/watch?v=msaqC-5VF-Q&feature=related http://www.youtube.com/watch?v=BDtZQj0Dlp0
http://www.youtube.com/watch?v=w9UM7rbrQtw